Resale IQ / Reselling manual
Chapter 4 · The economics · 6 min read

The cost of time: why fast stock beats fat margins

Two resellers each start with €1,000. One makes 20% per item and turns their stock every three weeks. The other makes 60% and turns it every six months. After a year the first has compounded roughly seventeen times; the second has done it twice. Same capital, radically different businesses.

Turns, not margins

A turn is one full cycle: cash becomes stock, stock becomes cash. Your annual return is roughly your per-turn margin compounded across however many turns you complete. Margin is the height of each step; turns are how many steps you take. Most beginners optimise the height and ignore the count.

The practical consequence is that shelf life is a cost with a price tag. Money sitting in an unsold jacket is money not buying the next three items. That opportunity cost never appears on any invoice, which is exactly why it gets ignored until the reseller notices they have €2,000 of stock and no cash.

Rough rule
Multiply your typical margin by your turns per year. If that number is not comfortably ahead of the effort you are putting in, the problem is almost always turns, not margin.

Where slow stock comes from

Slow stock is rarely bought slow on purpose. It arrives through three routes: buying out of season, buying edge sizes because they were cheap, and buying premium items whose buyer pool is small. All three feel like good decisions at the moment of purchase, because the margin on paper is wide.

The wide margin is compensation for the wait, not free money. A €200 coat with a €120 buy price is not a better buy than a €30 hoodie with a €18 buy price if the coat takes four months and the hoodie takes twelve days. Run the per-week arithmetic on both before deciding which one you were right about.

Designing a mix

Most working resellers end up with a deliberate blend: a base of fast, boring, reliable stock that generates the weekly cashflow, and a smaller allocation to slower, higher-margin items that would strangle the business if they were the whole of it. The base pays the bills and funds the next buy; the premium layer is where the upside lives.

The mistake is drifting into an accidental version of this — a portfolio that is 80% slow because the slow items are the ones that did not sell. That is not an allocation, it is an accumulation, and the difference is whether you chose it.

Key points
  • Annual return ≈ margin per turn × turns per year. Turns are the neglected half.
  • Shelf life is a real cost: capital in unsold stock is capital not buying the next item.
  • A wide margin on slow stock is payment for waiting, not a superior deal.
  • Hold a deliberate fast/slow mix. If your slow pile grew by accident, it is dead stock, not a strategy.

Questions

How many turns per year is realistic on Vinted?

It depends entirely on price tier. Cheap, high-volume clothing can turn in two to four weeks when priced correctly. Premium outerwear and designer pieces routinely take months. Measure your own by tracking days-from-listing-to-sale for thirty items — the answer is usually slower than the one you would guess.

Should I cut the price on something that has not sold?

Usually yes, and sooner than feels comfortable. An item at 60 days has already told you the price is wrong. Recovering your capital at a thin margin and redeploying it beats holding out for a number the market has declined twice.

Put this chapter to work.

Resale IQ turns a Vinted listing into one answer: BUY, WATCH, or SKIP — with buy-below price and best sizes.

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Live, while you read this
The 26 brands Resale IQ tracks had about 6,518 items leave the shelf in the last seven days across Vinted ES, FR, DE, IT and PT. Every figure in this manual's data pages comes from that same feed — see the full market data.
3. Sell-through rate versus volume: reading demand properly5. Where stock actually comes from
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