Resell with numbers, not guesses.
How to find underpriced items, price them against what similar items actually sell for, list them well and keep the profit. Written by the team building reva, with sources on every fee and rule.
Complete guides
Each one is the centre of a topic. Start with the one closest to your problem.

Vinted for resellers: fees by country, pricing without a sold filter, sourcing, bumps, bots and relisting rules, Pro accounts, shipping, disputes, DAC7.
26 min read
How to price used items for resale: comps from sold and live listings, condition, price levels from fast sale to max profit, markdowns, offers and bundles.
21 min read
How reselling works end to end in the EU and UK: sourcing, pricing, marketplaces, fees, taxes, shipping and scaling, with Poland examples in zł.
26 min read
Where resellers find stock and how to judge it: online listings, second-hand shops, bales, alerts, buying rules, demand checks and fake detection.
25 min read
Work out what a flip really earns: cost of goods, marketplace and buyer fees, shipping, returns, promotions, ROI vs margin and tracking profit per item.
25 min read
How crosslisting works in Europe: marketplace rules, Vinted, OLX and Allegro Lokalnie specifics, tool options, delisting fast and avoiding double sales.
24 min read
Inventory management for one-off resale stock: SKUs, storage, cost and listing status, sell-through and turnover, aged stock rules, shipping and returns.
21 min read
What sets the price, the main risk and the best selling channel for each category of used items, from phones and LEGO to jackets, with a guide for each one.
17 min readCalculators
Free, in your browser, with the formula explained under each one.
Popular guides

A pre-purchase authentication method for resellers: documentation habits, category checks, platform verification services compared, and risk rules.
14 min read
How resale works in Germany: Kleinanzeigen, Vinted and eBay.de compared, what private selling costs, and the line between private and commercial selling.
13 min read
Can you see sold prices on Vinted? What the app shows, why 'sold filter' tips conflict, and honest ways to estimate what similar items went for.
9 min read
A minimal bookkeeping workflow for resellers: five fields per flip, four reports, platform tax-reporting thresholds, and a 15-minute weekly routine.
9 min read
Price on Vinted with evidence: condition guidance from Vinted, live competition, listings that left the market, the buyer fee's effect and when to cut.
8 min read
Every route for a used phone: marketplaces, refurb buy-out sites, carrier trade-ins — what each pays, how fast, and which phones belong where.
8 min read
Where designer bags sell: peer marketplaces with verification, luxury consignment, eBay authentication route, and how fees and payouts differ.
8 min read
A diagnostic for stalled OLX listings: visibility vs price vs trust, what to fix in what order, where refresh fits in, and when OLX is the wrong place.
8 min read
Where different watches actually sell: general marketplaces, eBay with authenticity checks, specialist platforms for high-value pieces, and what each costs.
8 min readComparisons

Reseller tools for EU and UK sellers by job: pricing and demand research, buying, crosslisting and listing, with stated regions and Vinted terms risk.
8 min read
Vendoo and List Perfectly compared on facts from their own pages: crosslisting workflow, Vinted coverage, sale detection, pricing, who fits which.
7 min read
Crosslisting by hand or with software: honest time-and-money maths for small catalogs, hidden costs tools do not remove, and a break-even size.
7 min read
Auction or fixed price on eBay: where auctions still win, why fixed price dominates most categories, fee differences, and decision rules by item type.
7 min read
Kleinanzeigen and Vinted compared for German sellers: free private listings vs buyer-paid protection, categories, shipping, rules, and item routing.
7 min read
Trade-in vs selling a phone privately, for resellers: buy-back quotes as a price floor, how Swappie buy-outs work, and when buying below them pays.
8 min readTopics
Reselling basics, starting and scaling a resale business, and country and market guides with a Poland and EU focus.
10 pagesSourcingWhere and how to find items worth reselling: online listings, second-hand shops, bales, alerts and buying rules.
24 pagesPricingHow to price used items for resale: sold comps, condition, price levels, markdowns, offers and bundles.
16 pagesDemandMeasuring demand before you buy: sell-through, product research, market exits and what is worth reselling.
4 pagesProfitProfit maths for resellers: fees, margins, hidden costs, DAC7 reporting and tracking profit per item.
10 pagesMarketplacesGuides to resale marketplaces beyond Vinted, OLX and Allegro: eBay, Depop, Vestiaire fees and where to sell by category.
20 pagesVintedEverything a reseller needs to know about Vinted: fees by country, pricing, rules, bumps, Pro accounts and disputes.
30 pagesOLXReselling on OLX.pl: listing limits, fees, OLX delivery and protection, relisting and duplicates.
6 pagesAllegroSelling on Allegro and Allegro Lokalnie: commissions, Smart! parcels, account types and when to use which.
6 pagesCategoriesCategory resale guides: sneakers, phones, bags, watches, vintage, trading cards and electronics.
43 pagesCrosslistingListing the same item on several marketplaces: rules, tools, Vinted and Poland specifics, avoiding double sales.
9 pagesOperationsRunning the resale machine: inventory, shipping and returns, photos and listings, automation and daily workflows.
28 pagesToolsFree resale calculators and templates: profit, ROI, break-even, fees, turnover, quick-sale price, max buy price and a profit tracker.
9 pagesCompareHonest comparisons: reva vs other reseller tools, alternatives lists, best tools, and marketplace-vs-marketplace.
24 pagesGlossaryShort definitions of resale terms: sell-through rate, COGS, ROI vs margin, buyer protection and final value fees.
24 pagesEverything on the blog
Complete guides
- How to Resell Used Items by Category: The Category Guide Hub
- The Complete Crosslisting Guide for European Resellers
- Inventory Management for Resellers: The Complete Guide
- The Complete Resale Pricing Guide
- How to Calculate Reselling Profit: The Complete Guide
- How to Start Reselling in Europe: Beginner to Business
- The Complete Product Sourcing Guide for Resellers
- The Complete Vinted Reseller Guide
Guides
- Allegro Fees for Sellers: Commissions by Category
- Allegro Lokalnie Fees: 7.9%, 4.9% and 0% Explained
- Selling on Allegro Lokalnie: A Reseller's Guide
- Allegro Smart! for Sellers: Who Pays Delivery and When
- Allegro vs Allegro Lokalnie: Where Should a Reseller Sell?
- Is Allegro Wyróżnienie Worth It for Resellers?
- Selling Baby Items: Car Seats, Prams and Safety Rules
- Selling a Used Bike: Sizing, Season and Pricing
- Reselling Board Games: Components, Editions and Expansions
- How to Resell Books: ISBN, Editions, Bundles and Postage
- Selling Used Cameras: Shutter Count, Kits and Pricing
- How to Sell Collectible Coins: Grading, Fakes and Rules
- Reselling Gaming Consoles: PS5, Xbox, Switch Pricing Method
- Designer Bag Resale: Pricing and Authentication
- How to Sell a Used Dyson: Serial, Battery Test and Fakes
- How to Sell a Used Electric Scooter: Battery, Frame, Rules
- How to Sell Used Fishing Gear: Reels, Rods and Lure Lots
- How to Sell Football Shirts: Authentic, Replica or Fake
- Selling Used Furniture: Pricing, Measurement and Pickup
- How to Sell a Used Graphics Card: Test, Disclose, Pack and Price
- How to Sell a Used Guitar or Amp: Serial, Setup, Shipping
- Selling Used Headphones: Fakes, Ear Pads and Pricing
- How to Sell a Used iPad: Activation Lock, Model and Price
- Reselling Used iPhones in Europe: Checks and Pricing
- How to Sell Used Jewellery: Hallmarks, Scrap vs Piece Value
- Selling Kids' Clothes: Bundles, Brands and Pricing
- How to Sell a Used Laptop: Wipe, Unlock, Test and Price
- How to Resell LEGO: Set Numbers, Completeness and Pricing
- Reselling Levi's Jeans: Fits, Labels and Real Measurements
- How to Resell Outdoor Jackets: Labels, Fakes and Care
- Can You Resell Perfume? Platform Rules, Fakes and Shipping
- How to Sell Used Power Tools: Battery Platforms and Kits
- Selling PRL Ceramics and Glass: Marks, Damage and Reissues
- Reselling Samsung Phones: What a Used Galaxy Is Worth
- How to Sell Used Ski Equipment: Skis, Boots, Helmets, Bindings
- How to Sell a Used Apple Watch: Unpair, Unlock and Price It
- Reselling Streetwear: Hype, Authentication and Pricing
- How to Resell Designer Sunglasses: Codes, Fakes and Lenses
- How to Sell a Used Thermomix: Checks, Pricing and Channels
- Reselling Toys Beyond LEGO: Completeness, Safety and Bundles
- Reselling Trading Cards in Europe
- Reselling Used Electronics: Testing, Pricing, Platforms
- How to Price Used Sneakers for Resale
- How to Resell Video Games: Region, Completeness and Codes
- How to Price Vintage Clothing for Resale
- How to Sell Vinyl Records: Pressing, Grading, Packing
- Watch Resale Guide: Pricing Pre-Owned Watches
- How to Sell a Wedding Dress: Label, Measurements, Cleaning
- How to Avoid Double Sales When Crosslisting
- Batch Listing Workflow: 20 Items in One Session
- Message Templates for Resellers: Replies to Buyers That Save Time
- Selling on Vinted, OLX and Allegro Lokalnie at the Same Time
- How to Crosslist to Vinted: Rules and a Manual Routine
- How to Handle a Bad Review on Vinted, OLX and Allegro Lokalnie
- Writing Listings in Polish: Vocabulary for Non-Native Sellers
- Best Things to Resell in Europe
- How to Check Resale Demand Before You Buy
- How to Find a Reselling Niche: A Product Research Method
- How to Spot Resale Trends Early (and Know When They Die)
- Best Resale Marketplaces in Europe
- Catawiki Seller Fees: Commission, Reserve and Buyer Costs
- Chrono24 Fees: What Private Sellers and Dealers Pay
- Depop Fees for Sellers in the UK and Europe
- eBay Germany Fees for Private and Business Sellers
- eBay Poland Fees for Private Sellers
- eBay UK Fees for Private and Business Sellers
- Etsy Fees for Vintage Sellers: What a Sale Really Costs
- Do You Get Marketplace Fees Back on Cancelled Orders?
- Grailed Fees: What Sellers Pay After the May 2026 Change
- Kleinanzeigen Fees: What Private Sellers Pay in 2026
- How to Sell on Facebook Marketplace in Poland: A Seller's Guide
- Vestiaire Collective Seller Fees
- Wallapop Fees: What Sellers and Buyers Pay
- Where to Sell Used Clothes in Poland
- Where to Sell Designer Bags: Consignment, Marketplaces or Direct
- Where to Sell Used Phones: Marketplaces, Refurbishers or Trade-In
- Best Place to Sell Sneakers in Europe
- Where to Sell Watches: Matching the Watch to the Market
- OLX Delivery and Pakiet Ochronny for Sellers
- OLX Listing Limits by Category (and What OLX Doesn't Publish)
- Why Your OLX Listing Is Not Selling (and What to Change First)
- Is OLX Promotion Worth It? Wyróżnienie and Packages
- OLX Refresh vs Relist: Which One Is Allowed?
- Reselling on OLX.pl: The Complete Guide for Flippers
- Assisted Checkout vs Autobuy Bots: What's the Difference?
- How to Clean Clothes Before Reselling Them
- How to Liquidate Unsold Inventory as a Reseller
- GPSR for Second-Hand Sellers: What the EU Product Safety Rules Mean
- Do Private Sellers Have to Accept Returns? A Reseller's Guide
- How Much Inventory Should a Reseller Keep?
- Inventory Aging for Resellers: Buckets and Actions
- When Do Marketplace Listings Expire? OLX, Lokalnie, Vinted
- Writing Listing Titles and Descriptions for Resale
- Are Reselling Bots Allowed? Marketplace Automation Rules
- Shipping Deadlines and Rules on Vinted, OLX and Allegro Lokalnie
- How to Pack Fragile Items for Shipping: Glass, Ceramics and Electronics
- Parcel Lockers for Sellers: Dropping Off Marketplace Sales in Poland
- Product Photos That Sell Second-Hand Items
- Track Profit by Marketplace: Which Channel Pays You Most
- Do You Need to Give a Receipt When Selling Used Items in Poland?
- Reseller Bookkeeping: A Simple System That Survives Tax Season
- A Reseller's Daily Workflow: From Sourcing to Shipping
- Reseller KPIs: The Metrics Worth Tracking Every Week
- Organising Reseller Stock at Home: Bins, Labels and Lookups
- Reselling With a Full-Time Job: A System That Fits Evenings
- How to Ship Furniture and Large Items in Poland
- Shipping Supplies for Resellers: What to Buy and What It Costs
- Shipping Second-Hand Items from Poland to the EU and the UK
- Simplified Sales Record in Poland: How Resellers Keep It
- SKU Numbers for One-Off Resale Items: A Code Format That Works
- Sourcing Log: Track Every Item You Buy to Resell
- How to Find Sold Comps on Vinted, OLX and Allegro Lokalnie
- How to Tell if an Item Is Overpriced (Yours or One You Want to Buy)
- Should You Include Shipping in Your Resale Price?
- How to Handle Lowball Offers Without Losing the Sale
- How Condition Changes Resale Price
- How to Price for the Payout You Want After Fees
- Fast Sale or Max Profit? Choosing a Price Level
- How to Price Bundles and Lots
- How to Price for Offers Without Losing Margin
- Is It Actually Rare? How to Check a Find Before You Price It
- How to Price an Item With No Comparables
- Psychological Pricing for Resellers: Price Endings and Thresholds
- Seasonal Pricing: When to Hold Stock and When to Let It Go
- Should You Undercut Other Sellers? When It Pays and When It Hurts
- When to Lower Your Price: A Markdown Schedule for Resellers
- DAC7 for Resellers: The 30 Sales / €2,000 Rule Explained
- What Is a Good Profit Margin for Reselling?
- Hidden Costs of Reselling That Eat Your Profit
- Marketplace Fees in Poland: Vinted, OLX, Allegro Lokalnie
- Reseller Cash Flow: Why Profitable Resellers Run Out of Money
- Tax on Selling on Vinted and eBay in the UK: HMRC Rules
- Reselling Hourly Rate: How Much You Really Make Per Hour
- How to Estimate Risk Before You Buy Stock for Resale
- Selling Personal Items Within Six Months in Poland: PIT-36 Step by Step
- Reselling in Germany: Kleinanzeigen, Vinted and the Rules
- OLX and Allegro Lokalnie Scams That Target Sellers
- Private vs Business Seller: When Reselling Becomes a Business
- Reselling in Poland: A Guide for English Speakers
- Reselling in the UK: Platforms, Trader Rules and Fees
- How to Scale a Reselling Business
- Selling in Poland as a Foreigner: Marketplaces, Status and Tax
- How to Start Reselling With a Small Budget
- Can You Resell in Poland Without Registering a Business?
- Sourcing on Allegro Lokalnie: Buying Stock to Resell
- How to Check an Item Is Genuine Before You Buy to Resell
- How to Avoid Buying Stolen Goods When Sourcing for Resale
- Komornik Auctions for Resellers: Buying Movables at Bailiff Auctions in Poland
- The Best Time of Year to Buy Items to Resell: A Supply Calendar
- Buying Broken Items to Fix and Resell: When It Pays
- Buying Bulk Lots to Resell: Price the Lot by Its Best Items
- How to Set Buying Rules as a Reseller
- Charity Shop Reselling: Sourcing Ethically in the UK and Poland
- Are Clothing Bales Worth It for Resellers?
- How to Evaluate a Resale Deal in 60 Seconds
- Flipping Items from Facebook Marketplace to Vinted, OLX and Allegro Lokalnie
- Flea Market Flipping: How to Buy at Pchli Targ and Resell Online
- House Clearance Sourcing: Which Items to Take and Resell
- Are Liquidation Pallets Worth It? Expected Value, Risks and Red Flags
- Sourcing in Polish Second-Hand Shops (Lumpeks)
- Marketplace Arbitrage: Buying on One Platform, Selling on Another
- How to Negotiate When Buying Used Items to Resell
- Retail Arbitrage in Europe: Reselling Clearance Stock Legally
- Is It Illegal to Sell Fake Designer Items? EU, Polish and Platform Rules
- How to Spot Fakes and Replica Listings Before You Buy
- How to Test Used Electronics Before Buying: A 10-Minute Protocol
- Where to Find Vintage Clothing to Resell in Poland and Europe
- Best Time to List on Vinted: What You Can Actually Know
- How to Measure Clothes for Vinted Listings
- How to Sell Shoes on Vinted: Photos, Sizes, Pricing and Packing
- Vinted Account Restricted or Blocked: Why It Happens and What to Do
- How the Vinted Algorithm Ranks Listings
- Vinted Balance Withdrawal: Pending Money, Payouts and Failed Transfers
- Is a Vinted Bump Worth It?
- How to Set Up Bundle Discounts on Vinted
- Vinted Scams That Target Sellers: Phishing, Off-App Deals and Fake Claims
- Selling and Buying Across Vinted Countries
- How Much Money Can You Make on Vinted? Realistic Maths
- Vinted Fees by Country
- How to Make Your First Sale on Vinted: A 7-Day Plan
- Vinted Holiday Mode: How It Works and What It Does Not Do
- Vinted Item Verification: Cost, Process and Limits
- Why Your Vinted Items Aren't Selling
- Vinted Listing Rules Resellers Break Most Often
- Vinted Description Template: A Copy-and-Fill Listing Text
- Selling Men's Clothes on Vinted: What Sells and How to List It
- How to Package Clothes for Vinted: Size, Materials and Proof
- Vinted Parcel Lost or Damaged: What Sellers Should Do
- How to Price Items on Vinted
- Vinted Pro Countries: Is It Available in Poland?
- Vinted Returns and 'Item Not as Described' Claims for Sellers
- Vinted Shipping Options in Poland: Carriers and Settings
- How Vinted Showcase Works: Wardrobe Spotlight Rules and Prep
- Vinted Size Guide: EU, UK and US Sizes Without Guesswork
- Can You See Sold Prices on Vinted?
- How Long Does It Take to Sell on Vinted?
Calculators and templates
- Break-Even Sale Price Calculator
- Reseller Inventory and Profit Tracker Spreadsheet
- Inventory Turnover Calculator for Resellers
- Marketplace Fee Calculator: Vinted, OLX, Allegro Lokalnie, eBay
- Markup Calculator: Cost, Price and Margin Together
- Maximum Buy Price Calculator
- Quick Sale Price Calculator
- Resale Profit Calculator
- Reselling ROI Calculator
Comparisons
- AI Tools for Resellers: What Actually Helps
- Allegro Lokalnie vs OLX: Which Is Better for Sellers?
- Best Reseller Tools for European Sellers
- Consignment vs Selling Yourself: Commission, Time and Risk Compared
- Crosslist Alternatives for Vinted and EU Sellers
- eBay Auction vs Buy It Now: Which Format Sells Your Item
- eBay vs Allegro: Where Should Sellers in Poland List?
- InPost vs Orlen Paczka for Marketplace Sellers
- Kleinanzeigen vs Vinted: Where Your Items Sell in Germany
- List Perfectly Alternatives
- OLX vs Facebook Marketplace: Where to Sell in Poland
- OLX vs Vinted: Where Should You Sell in Poland?
- reva vs List Perfectly: Features and Fit
- reva vs Vendoo: Which Fits a European Reseller?
- Spreadsheet vs Inventory App for Resellers: When to Switch
- StockX vs GOAT for European Sellers: Fees, Levels and Access
- Trade-In vs Selling a Phone Privately: The Reseller's Price-Floor View
- Vendoo Alternatives for European Resellers
- Vendoo vs List Perfectly: An Honest Comparison
- Vinted Bump vs Showcase vs Price Drop: Which to Use When
- Vinted vs Allegro Lokalnie: Where Should You Sell?
- Vinted vs Depop: Which Is Better for Resellers?
- Vinted vs eBay for Resellers in Europe
- Vinted vs Wallapop: Which App Is Better for Sellers?
- Manual vs Software Crosslisting: When Each Actually Wins
- Cheapest Marketplace in Poland by Item Price
Definitions
- Average Selling Price (ASP): Definition and Reseller Use
- Buyer Protection Fee: Who Pays It and Why
- What Is Card Grading? PSA, BGS and CGC Explained
- COGS for Resellers: Cost of Goods Sold
- Comparable Sale (Comp): The Building Block of Resale Pricing
- Condition Abbreviations in Resale: NWT, NWOT, EUC and More
- Consignment: Selling Through Someone Else
- Days to Sell: Definition, Formula and Use for Resellers
- What Does Deadstock Mean? DS vs Dead Stock Explained
- Fair Market Value: What It Means When You Resell
- Final Value Fee: Does It Include Shipping?
- Gross Margin vs Net Margin for Resellers
- Insertion Fee: The Cost of Listing, Explained
- Inventory Shrinkage for Resellers: Lost, Damaged, Missing
- Inventory Valuation for Resellers: Cost vs Market Value
- Landed Cost: What a Resale Item Really Cost You
- Margin of Safety in Reselling: The Buffer Between Price and Loss
- Market Liquidity: What It Means for Second-Hand Sellers
- Opportunity Cost in Reselling: The Price of Money Stuck in Stock
- Price Elasticity: What It Means for Resellers
- ROI vs Margin vs Markup for Resellers
- Sell-Through Rate: Definition, Formula and Calculator
- SNAD Meaning: Significantly Not As Described Explained
- Unit Economics in Reselling: What One Item Really Earns
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Scout shows finds priced below the level where similar items leave the market. Every price is an estimate you check before you buy.