The short version
- Typical range: £18 – £80 — see the full cocktail dress value guide
- What decides your price: condition, and how well you evidence it in photographs
- Cost to sell here: nothing, at any price
- Category: Clothing
Before you photograph it
Ten minutes here is worth more than anything else you will do. Buyers are deciding between your listing and someone else’s, and preparation is what visibly separates the two.
- Measure bust, waist, hip and shoulder-to-hem, and note any built-in structure or boning.
- Check the zip, lining and any embellishment for missing beads or sequins.
- Have it cleaned if worn, and check the underarms and hem.
The photographs that sell a cocktail dress
Four photographs do almost all the work. Shoot in daylight, near a window, with the item against something plain — and do not use the flash, which flattens texture and hides exactly what buyers are trying to see.
- Full length on a hanger, front, in daylight
- The fabric and any embellishment close up
- The label with brand and size
- The zip, lining and any missing bead, pull or mark
Photograph the flaws too. It feels counterproductive, but a listing that shows the worst of an item gets fewer questions, fewer withdrawn offers and fewer arguments at handover. Buyers who can see the damage stop imagining something worse.
Writing the title and description
Style, fabric and size: “Black Sequin Cocktail Dress, Midi, Size 10”. Say the length — mini, midi or knee — because cocktail covers all three. Occasion dresses sell on how they photograph, so shoot in daylight.
Then state these in the description, because a buyer who has to ask is a buyer who might not bother:
- Bust, waist, hip and shoulder-to-hem measurements
- Fabric, embellishment type, and whether lined or boned
- Any missing beads or sequins
- Whether it has been worn and cleaned
What buyers will actually ask
You will receive the same three messages about a cocktail dress. Answering them in the listing itself removes the back-and-forth, and answering them well when they do arrive is what turns an enquiry into a sale.
Give the flat measurements rather than an opinion. Structured occasion wear has little give and sizing varies by brand.
Inspect under good light and photograph any gaps. Small losses are normal on worn embellished dresses and accepted when shown.
Check and say. Lining affects how a structured dress sits and whether anything is needed underneath.
Pricing it so it actually sells
Start from the honest condition grade rather than the price you hope for. WishThrift listings use five grades — New with Tags, Like New, Good, Fair and For Parts — and what each grade means is worth reading before you choose, because grading up is the most expensive mistake sellers make. It does not raise the price; it produces a buyer who arrives expecting something else.
The cocktail dress value guide prices all five grades for this item. Pick your grade, take the figure, and if you sit between two grades price toward the lower one. Items priced honestly sell faster than items priced hopefully, and on a free platform there is no fee eating the difference anyway.
What you keep, compared
On a £49 sale — roughly the middle of the range for a cocktail dress — here is what the commission-charging platforms would take, and what you would keep on each:
| Where you sell it | Fee | You keep |
|---|---|---|
| WishThrift | £0 | £49 |
| Poshmark | −£10 | £39 |
| eBay | −£7 | £42 |
| Mercari | −£5 | £44 |
| Etsy | −£3 | £46 |
Seller-side rates verified 26 Jul 2026 — Poshmark: 20% commission on sales of $15 and above; eBay: 13.6% final value fee, plus a per-order fee; Mercari: flat 10% selling fee; Etsy: 6.5% transaction fee, plus a listing fee and payment processing. Percentages are applied to the sterling figure above; the fixed per-order and processing charges those platforms add are quoted in their own currency and are not included here, so the real deductions are slightly larger. Full breakdown: marketplace selling fees compared.
Timing and getting it to the buyer
Lifts before Christmas and through the summer party and wedding season. Black and classic colours sell steadily; strong prints date quickly.
Fold with tissue between embellished layers so the beading does not snag itself. Box structured styles rather than bagging them.
WishThrift does not process payments or arrange delivery — you and the buyer agree both directly — so confirm payment has cleared before the item leaves your hands, and keep the conversation on the site so there is a record of what was agreed.
Ready to list it? It takes about two minutes, costs nothing, and there is no commission when it sells — create a free account or see how selling works.
Frequently asked questions
What is a used cocktail dress worth?
Typically £18 to £80, with designer pieces well above. See the cocktail dress value guide.
Should I clean an occasion dress before selling?
Yes if it has been worn, and say so in the listing. Buyers of occasion wear expect it and it reliably pays for itself in this category.
Do missing sequins ruin the value?
Not if disclosed and modest. Photograph the affected area so the buyer can judge whether it is visible when worn, and price accordingly.
See also: what a used cocktail dress is worth · browse live clothing listings · condition grades explained.