Operations
Operations is everything between buying and getting paid: storing and tracking stock, shipping on time, handling returns, photographing and describing items, and deciding which parts of the work to automate. This hub covers those systems for resellers working across several marketplaces, quoting what each marketplace's terms say about bots, crosslisting tools and automation rather than guessing. The goal is fewer missed deadlines and less time spent on tasks that do not need you.
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Guides

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
A framework for inventory size: capital share, sell-through and days-to-sell limits, depth vs breadth, and the signals that say you are holding too much.
7 min read
How to run resale around a 40-hour job: batching, buying rules that work while you are offline, realistic weekly hours, and what to automate first.
6 min read
Are reselling bots allowed? What Vinted, OLX, eBay, Depop, Grailed and Kleinanzeigen terms say on bots, scraping, crosslisting tools and duplicate listings.
14 min read
Private sellers usually needn't accept change-of-mind returns, but not-as-described claims still apply. How Vinted, OLX, Allegro and Lokalnie handle it.
8 min read
A home storage system for resellers: bin numbering, label conventions, a location field in your sheet, picking without errors, and scaling up.
8 min read
What assisted checkout is and how it differs from autobuy bots: who presses pay, account and payment security, screenshots and what marketplace terms say.
8 min read
Write listing titles and descriptions buyers find: brand, model, size and condition, measurements, honest flaw notes and adapting text per marketplace.
8 min read
Exits for resale stock that won't sell after markdowns: bundles, lots on OLX and Allegro Lokalnie, moving marketplace, donating and a rule for cutting losses.
8 min read
Photographing second-hand items that sell: light, angles, flaws and labels, phone settings, marketplace photo rules and why white backgrounds can backfire.
7 min read
Eight metrics a reseller should track, with formulas: sell-through, days to sell, ROI, margin, cash tied up in stock, aged stock share and profit per hour.
7 min read
A sourcing log records what you paid, where, when and what you expect to earn. The columns you need, why purchase dates matter in Poland, and a weekly check.
6 min read
Inventory aging sorts unsold stock by days listed. Set buckets like 0-30, 31-60 and 61-90 days, match them to marketplace clocks and decide what to do.
6 min read
How long listings stay live on OLX, Allegro Lokalnie and Vinted, auto-extension and relisting rules, and how to track expiry dates in your stock.
6 min read
Track reselling profit per marketplace, not in total: the columns, how Vinted, OLX and Allegro Lokalnie fees change profit, and a monthly channel review.
5 min read
How to keep the simplified sales record (uproszczona ewidencja sprzedaży) for unregistered activity in Poland: usual columns and the daily deadline.
5 min read
A daily routine for resellers: when to check new listings, batching photos and listings, shipping blocks, bookkeeping and which steps to automate first.
8 min read
Shipping deadlines on Vinted, OLX and Allegro Lokalnie: how long you have to send, what late dispatch costs, return pickup windows and Lokalnie parcel prices.
8 min read
What changes when a used item leaves Poland: EU versus UK parcels, the UK £135 VAT rule, customs paperwork and what we could not confirm for private sellers.
8 min read
A code format for one-off resale items: what goes into each SKU, how to tag clothes and electronics, and how one code links photos, sheet and listings.
6 min read
How to clean used clothes before you list them: reading the care label, removing odours and pilling, what not to wash and how to disclose leftover flaws.
6 min read
How to ship furniture and other bulky used items in Poland: when parcel lockers stop working, courier and transport options, pickup-only listings and costs.
6 min read
The shipping supplies a reseller actually needs, how to cost them per parcel, when reused boxes are fine, and what fits the Orlen Paczka S, M and L sizes.
6 min read
How sellers use parcel lockers in Poland: size classes, label or code drop-off, what to do when a parcel won't fit, and pickup windows for returned parcels.
6 min read
How to pack fragile second-hand items so they survive a parcel network: the box-in-box method, filler, glass, ceramics and electronics, and the proof to keep.
6 min read
Must sellers of used items in Poland issue a receipt? Cash register rules, the 20,000 zł threshold, what changes for resellers and which records to keep.
6 min read
What the EU General Product Safety Regulation means for used-goods sellers: what it covers since 13 Dec 2024, private vs business sellers and open questions.
5 min readStart with reva
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