Cross-listing app comparison
RoundLemon vs SellerAider
SellerAider combines a crosslister with "Grow" tools that automate offers, relisting and sharing. RoundLemon focuses on listing, selling and sourcing, and keeps a person in charge of what gets posted to Vinted.
Choose RoundLemon if…
- You want a free plan rather than a 14-day trial
- You want alerts for new stock on Vinted, Facebook Marketplace and CeX
- You want prices in pounds with VAT included
- You'd rather not automate likes, follows or offers on your Vinted account
Choose SellerAider if…
- You sell on Poshmark, Etsy, Shopify, Grailed or WooCommerce
- You want automated offers, relisting and sharing
Side by side
| Feature | RoundLemon | SellerAider |
|---|---|---|
| Marketplaces | eBay, Vinted, Depop, Whatnot, Facebook Marketplace, Discogs | 15+, including eBay, Etsy, Shopify, Grailed, WooCommerce and Facebook |
| Vinted | Yes: Vinted Pro integration, or the browser helper fills the form and you press Publish | Its UK page lists Vinted |
| Free plan | Yes, free for good: inventory, cross-listing, 5 AI listings a month | No. 14-day free trial |
| Paid plans | Free plan, then from £4.20 a month (pre-launch price, VAT included) | Crosslister Standard $12.99, Pro $29.99 a month. Grow tools $18 to $25 a month |
| Sourcing watches | Vinted, Facebook Marketplace, CeX, Cash Converters and retail sites (paid plans) | No |
| Deal alerts | Telegram and web | No |
| Buys for you | No. It alerts you and you decide | No |
| AI listings from photos | Yes. Asks you when the photos can't confirm a detail | Yes |
| Ends other listings after a sale | Yes | Yes |
| Profit after fees | Yes, after purchase cost, postage and real platform fees | Analytics |
| Scheduled price drops | Yes (Bump Down, eBay and Vinted Pro) | Not stated |
| How it runs | Web app plus Chrome extension | Web app plus Chrome extension |
SellerAider details checked on 5 November 2026 from SellerAider’s own website (sources). Prices and features change, so check their site before you decide. “Not stated” means we couldn’t confirm it from their site.
Automation vs a person pressing Publish
SellerAider's Grow tools automate actions on your shop, like sending offers, relisting and sharing. RoundLemon automates where marketplaces allow it, such as eBay's API, and on Vinted and Facebook Marketplace its helper fills in the form and leaves Publish to you.
Sourcing is the gap
SellerAider helps you sell what you have. RoundLemon also helps you find the next item: saved searches across Vinted, Facebook Marketplace, CeX and Cash Converters, with Telegram alerts and CeX trade-in prices alongside each find.
Questions
RoundLemon vs SellerAider: FAQ
How much is SellerAider?+
When we checked, SellerAider's pricing page showed Crosslister Standard at $12.99 a month and Pro at $29.99, with Grow plans at $18 and $25 a month, and a 14-day free trial.
Is there a free SellerAider alternative?+
RoundLemon's Free plan has no time limit and includes cross-listing to eBay, Vinted, Depop, Whatnot, Facebook Marketplace and Discogs.
More comparisons
Sources
SellerAider is a trademark of its owner. RoundLemon isn’t affiliated with or endorsed by SellerAider. Vinted, eBay, Depop, Whatnot, Facebook and Discogs are trademarks of their owners.