Crosslist from Poshmark to StockX: Deadstock Out of the Closet
Which Poshmark items StockX will take, how a 9% plus 3% fee compares with Poshmark's 20%, what changes in shipping, and what FLUF does on each side.
7 days for £1, then from £9/month.
- This route suits US and Canadian Poshmark sellers who also hold new, boxed sneakers, sealed cards or collectibles.
- StockX‘s main marketplace only takes brand-new items, and only ones already in its catalogue. Worn or one-off pieces stay on Poshmark.
- Poshmark takes 20% on sales over $15. StockX takes 3% processing plus a 9% transaction fee for new sellers, with a $5 minimum.
- FLUF sees neither a Poshmark sale nor a StockX sale on its own. Mark the sale in FLUF and it ends the listing on the other side.
Which Poshmark items belong on StockX
StockX is a catalogue, not a closet. You do not write a listing. You pick a product StockX already lists, choose the size, and set an Ask. That rules out most of a typical Poshmark closet: worn dresses, thrifted finds, anything without a model number. What it leaves is the deadstock. StockX’s condition rules say every item sold on its Verified Marketplace must be brand new, and its selling guide lists sneakers, streetwear, electronics and collectibles.
The Poshmark sellers who fit are the ones whose New With Tags section is the profitable part: a pair of Jordans bought at retail and never worn, a sealed Pokémon booster box, a boxed collectible figure. For those items, StockX buyers search by exact product and size, so a fair Ask sells without photos, followers or shares.
How the fees compare
Poshmark’s US fee policy is a flat $2.95 on sales under $15 and 20% on sales of $15 and more. Listing is free. On a $150 pair of sneakers you keep $120.
StockX charges the seller a 3% payment processing fee plus a transaction fee set by your Seller Level. New sellers start at Level 1 on 9%, and the rate steps down to 8.5% after 12 sales and $1,500 in a quarter, then 8%, 7.5% and 7% at Level 5. Every sale also carries a minimum seller fee: $5 in the US and C$7 in Canada. On the same $150 pair at Level 1 you pay $13.50 plus $4.50 processing and keep $132, twelve dollars more than on Poshmark. Under $40 the minimum fee starts to bite and Poshmark’s $2.95 flat rate wins.
Canadian Poshers should read Poshmark’s Canadian fee policy separately, and note that StockX quotes its Canadian minimum in Canadian dollars.
Poshmark habits to drop on StockX
- No photos, no sharing, no offers. StockX shows the buyer its own product images. Your only lever is the Ask, or a Sell Now against the highest existing buyer Offer.
- You ship to StockX, not to the buyer. After a sale you have two business days to ship the item to StockX for verification, and the buyer gets it once it passes. On Poshmark you print the prepaid, pre-addressed label and take it to USPS yourself.
- Condition is checked by someone else. On Poshmark you describe the condition. On StockX a verifier does, and an item that is not new goes back to you.
- Bulk changes the maths. If you hold several pairs of the same shoe, StockX’s Flex Storage lets you send them in for StockX to hold and verify, which opens faster shipping options for buyers.
What FLUF does on each side
| Poshmark | StockX | |
|---|---|---|
| How you connect | FLUF browser extension | Sign in with your StockX account |
| Bring existing listings into FLUF | Yes | Yes |
| FLUF sees a sale here | No, mark it sold in FLUF | No, mark it sold in FLUF |
| FLUF ends the listing here when it sells elsewhere | Yes | Yes, it removes the Ask |
| Relisting and offer management | Included from the Seller plan upwards | No |
This pair needs one click from you whichever side sells. Sell the Jordans on Poshmark and mark them sold in FLUF; the StockX Ask comes down. Sell them on StockX and mark them sold in FLUF; the Poshmark listing ends. Do it when the sale email arrives, before you pack. If the same pair is also on eBay or Depop, FLUF sees those sales itself and removes the Ask and the Poshmark listing without the click.
Getting started
- Connect Poshmark through the FLUF browser extension, and bring your closet into FLUF.
- Connect StockX by signing in.
- Filter your closet to New With Tags items that have a model number or a sealed box.
- Match each one to its StockX product and size, set the Ask from the current market, and publish.
What FLUF costs
Crosslisting and inventory sync are on every plan. Start with 7 days for £1, then from £9/month, then plans from £9/month. Relisting and offer management on Poshmark are included from the Seller plan upwards.
| Plan | Monthly | Crosslisted products |
|---|---|---|
| Starter | £9/month | Unlimited |
| Seller | £29/month | Unlimited |
| Pro | £99/month | Unlimited |
| Super Seller | Custom pricing — tell us what you need | Unlimited |
Sources
- StockX: condition of items sold on StockX
- StockX: how do I sell on StockX? (Asks, Sell Now, two-day shipping, Flex)
- StockX: seller fees and Seller Levels
- Poshmark: US fee policy
- Poshmark: Canada fee policy
- Poshmark: how selling works (prepaid USPS label)
Sources checked September 2026.
Related guides
Frequently Asked Questions
Not on StockX's Verified Marketplace, which only takes brand-new items that are already in its catalogue. Worn and one-off pieces stay on Poshmark.
Above roughly $40, yes. Poshmark takes 20% on sales of $15 and more. StockX takes 3% processing plus 9% for new sellers, falling to 7% at Level 5, with a $5 minimum per sale. On a $150 pair you keep about $12 more on StockX.
No, neither. Mark the sale in FLUF when it happens and FLUF ends the listing on the other side and on any other connected channel.
Within two business days of the sale, to StockX for verification rather than to the buyer.
No. You sign in to StockX from FLUF. Poshmark does connect through the browser extension.
Yes. StockX quotes a C$7 minimum seller fee for Canada, and Poshmark Canada has its own fee policy, so check both before you set an Ask.