Sell or clear out cosplay costumes on COSMA, the cosplay-only marketplace

A costume worn once at an event is hard to throw away even with no plans to wear it again. Meanwhile someone who wants to cosplay the same character is looking for exactly what you have. Because costumes are near one-of-a-kind, their value lives on when they reach the right person.

The long-standing "o-yuzuri" (hand-off) culture among cosplayers exists for this cycle. COSMA was built to make it safer than DM deals and easier to search than generic marketplaces.

On generic apps the "cosplay" category is flooded with mass-produced new items and personal hand-offs get buried. COSMA is different in these ways.

1. 1

   Buyers are cosplayers

   People on COSMA are looking for costumes, wigs and props. Your listing reaches someone searching by series and character — someone who understands its value.

2. 2

   Searchable by series and character

   Tag your listing with the series and character and it shows up for people searching that title, instead of sinking into a sea of "cosplay".

3. 3

   Stripe payments

   Buyer payments are processed by Stripe and held safely until the transaction completes — no "shipped but never paid" DM risk.

4. 4

   Anonymous shipping

   When a buyer chooses post-office pickup, their home address is never shared with you, at no extra fee. If you also want to hide your own return address, the order screen explains how, and what each shipping method allows.

5. 5

   Automatic payouts

   Earnings are paid to your registered bank account automatically via Stripe Connect. No withdrawal requests.

COSMA's selling fee is 12% of the item price (launch pricing; standard 15%). COSMA covers Stripe's processing and payout fees, so the selling fee is the seller's only cost. Shipping is not subject to the fee.

Fee rates may change. Check the Terms of Service and Help Center for current conditions.

From sign-up to your first listing, everything can be done on a phone.

1. 1

   Sign up for free

   Register with an email address or social account. Sellers complete identity verification through Stripe Connect once.

2. 2

   Take photos

   Front and back, fabric close-ups, any flaws, and included accessories, in good light. Photos matter most.

3. 3

   Enter series, character, size and condition

   Add series and character tags, category, condition (new / like new / worn a few times / visible wear), actual measurements and included items.

4. 4

   Set a price and publish

   Use the 30–70%-of-retail guideline. You can edit after publishing.

5. 5

   Ship when sold

   You're notified on purchase. Ship as specified; the buyer confirms receipt and earnings are paid out automatically.

The same costume sells faster and for more depending on how it's listed.

• Use official series and character names (note abbreviations in the description)
• Always give actual measurements — "size M" alone isn't enough for buyers to decide
• Show flaws in photos and text; honest listings sell faster and cause fewer disputes
• Bundle wig, shoes and props so the buyer can wear it right away
• List before a new season airs or a related event — demand rises
• Keep your face and personal details out of worn photos
• Reply to questions promptly; response speed signals trust

COSMA isn't just for costumes. Eight categories are supported: costumes, wigs, props, shoes, sets (costume + wig etc.), camera gear, photobooks/ROM, and crafting materials.

Strobes and reflectors bought for shoots, leftover EVA foam and wire, unsold photobook stock — anything used in cosplay activity can go to its next owner on COSMA.

Generic apps like Mercari or Rakuma and COSMA aren't better or worse — they suit different things.

Conditions of each service change over time. Check the official site before using one.