Find out why first. Marking down is the last dial, not the first.
Work out why it is not selling before you mark it down. Is it at the back of the shop, are there no good photos, is it not online, or is the price genuinely higher than the market gives today? Only once the first three are right is the price an honest answer.
A second location often works better than a lower price. The same piece standing still for two years in the shop can find a buyer online who was looking for exactly that.
Put a limit on it, or everything stays: pick one period — six months, a year — after which a piece must be looked at again. Without that rule, dead stock becomes decor.
Written on 9 September 2026. This answer describes a way of working, not a legal obligation: it contains no VAT rule, no rate and no deadline. What you must keep by law does differ per country — that is on the stock list page, with the source and check date per country.
This is an explanation, not tax or legal advice. Put your own situation to your accountant.
Start from what the piece really cost you: the purchase price plus transport, any import costs, and whatever you put into repair. Then account for the VAT that sits inside your margin, because you pay that over. What is left is your real profit — and only then do you compare with what similar pieces fetch.
Adding a piece is taking a photo and filling in three fields; the rest can wait. Publish the piece and it appears on the marketplace with its own address, so you can forward or share that link. Marking it sold takes it off the marketplace by itself, without you losing the row.
Vintro Pro keeps, per piece, what you paid, when, and where it came from. Your stock list and your margin VAT build themselves while you work.
Free up to 10 pieces, no card number and no end date.