The short version
- Typical range: £15 – £55 — see the full activewear set 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.
- Check the top and bottoms are genuinely matching, same brand line and same colour batch.
- Test the fabric for opacity when stretched, and check the waistband and seams.
- Note both sizes separately and the brand’s style names if they have them.
The photographs that sell an activewear set
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.
- Both pieces laid out together
- The fabric stretched over a hand, showing opacity
- Both size and composition labels
- Seams, waistband and any pill, mark or pull
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 It feels counterproductive, but a listing that shows the worst of an item gets fewer questions, fewer withdrawn offers and fewer arguments at handover.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
Brand, line and both sizes: “Gymshark Vital Seamless Set, Top S Leggings S, Sage”. Brand line names are searched exactly in activewear. State both sizes and confirm it is a genuine matching set.
Then state these in the description, because a buyer who has to ask is a buyer who might not bother:
- Brand and specific product line
- Sizes of both pieces, stated separately
- Fabric composition, and whether opaque when stretched
- Any pilling on the inner thigh, and seam condition
What buyers will actually ask
You will receive the same three messages about an activewear set. 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.
Check the line and the colour in daylight. Sets faded to different shades sell for much less and buyers notice.
Stretch the fabric over your hand and photograph. It is the defining question for used activewear.
Give both. Buyers frequently need different sizes top and bottom.
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 activewear set 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 £35 sale — roughly the middle of the range for an activewear set — 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 | £35 |
| Poshmark | −£7 | £28 |
| eBay | −£5 | £30 |
| Mercari | −£4 | £31 |
| Etsy | −£2 | £33 |
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
Steady with a strong January lift and a spring bump. Recognised activewear brands sell within days.
Light and cheap to post. Wash both pieces before sending and say so — on used activewear that single sentence resolves the buyer’s main hesitation, and it costs you nothing but a wash cycle.
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 activewear set worth?
Typically £15 to £55, with recognised brands well above high-street sets. See the activewear set value guide.
Do people buy used activewear?
Yes, in large numbers, particularly premium brands where the saving is substantial. Being explicit about washing, pilling and opacity is what makes buyers comfortable.
Should I split the set?
No, if it genuinely matches. Sets sell for more together and faster, because matched activewear is what buyers are searching for.
See also: what a used activewear set is worth · browse live clothing listings · condition grades explained.