Cross-list to Whatnot
with SellTheFlip
Whatnot blends live streaming, auctions, and community in a way no other reselling marketplace does. SellTheFlip lets you mirror your live inventory across eBay, Poshmark, and Mercari — so the items that don't sell on stream don't sit idle.
Whatnot
whatnot.com
- Best for
- Live shopping, collectibles, sneakers, trading cards
- Auto-delist
- Yes
- Bulk actions
- Yes
What is Whatnot?
Whatnot is the largest live-shopping marketplace in the US, with explosive growth across collectibles, sneakers, trading cards, vintage clothing, and pop-culture toys. Sellers stream live auctions and fixed-price 'buy-it-now' drops to engaged communities — average shoppers buy multiple items per stream.
Whatnot's live-first format is unique, but every Whatnot seller also keeps a 'shop' page of fixed-price listings between streams. That's exactly where crosslisting pays off: those same items can simultaneously be on eBay, Poshmark, and Mercari, capturing the buyers who aren't tuned in.
Visit whatnot.com to learn more about the marketplace itself.
How SellTheFlip helps you crosslist on Whatnot
Built for resellers who refuse to retype the same listing six times.
Crosslist Whatnot shop items everywhere
Publish your Whatnot fixed-price listings to eBay, Poshmark, Mercari, Depop, and Facebook Marketplace at the same time.
Auto-delist when an item sells live
Sold an item during a live show? SellTheFlip removes the matching listing on every connected marketplace within seconds.
Bulk publish from your inventory
Got 50 cards or sneakers to drop tonight? Bulk-select and publish them across every marketplace in a few clicks.
Shipping weight and category fields
Whatnot tracks weight and category for every listing. SellTheFlip's shipping profiles fill these in automatically.
How to resell on Whatnot
Four steps from sign-up to your first cross-listed sale.
- 1
Apply to be a Whatnot seller
Whatnot reviews seller applications to keep quality high. Apply at whatnot.com/sell — most are approved within a few days.
- 2
Connect Whatnot to SellTheFlip
Install the SellTheFlip extension and log into Whatnot. We automate publishing and delisting through your own session.
- 3
Build your inventory once
Add photos, title, condition, and price. Our AI prefills most fields from a single product photo.
- 4
Crosslist to Whatnot and beyond
Pick Whatnot plus any other marketplaces. We translate your listing into each platform's category structure automatically.
How to sell more on Whatnot
Field-tested tactics from top resellers — apply them to your Whatnot listings (and the rest of your marketplaces) at the same time.
Cross-promote your live stream
Mention upcoming Whatnot streams in your eBay and Mercari listings. Buyers who like your inventory often follow you to live shows for better deals.
Photograph cards and sneakers carefully
Collectibles buyers scrutinize condition. Use clear lighting, straight-on angles, and close-ups of edges, corners, and any flaws.
Price your Whatnot shop slightly higher
Save your best deals for live streams to drive engagement. Fixed-price shop items can be 5-15% higher — buyers are paying for convenience.
Refresh inventory weekly
Whatnot's algorithm rewards active sellers. Use SellTheFlip's bulk repost to keep new items at the top of your shop and other marketplaces.
Also crosslist to...
You're already on Whatnot. SellTheFlip publishes the same listing to every other major marketplace too.
Start crosslisting to Whatnot today
Join thousands of resellers who list once on SellTheFlip and publish to Whatnot plus 5 other marketplaces in one click.
Start with 10 free marketplace postings, then $8/month or $80/year. Cancel anytime.