Two jobs. One busy bee.

Ultralist fills listing forms. Ultrabuy tells you what a listing is worth. Both live in one small panel on the marketplace page you already have open.

Ultralist: type it once, fill every form.

Save an item one time. On each marketplace you sell on, one press puts it into the listing form.

One item, every marketplace

Name, brand, size, colour, condition, price and up to 12 photos, saved once in your browser.

List it everywhere

Tick the marketplaces and press once. Each listing form opens in its own tab and is filled from your item, up to 8 at a time. You read each one and press Publish.

Fill in one press

Title, description, price, brand, condition, colour and photos go into the form in front of you. Fields are mapped one by one on Depop and Wallapop; on eBay and OLX the first steps are mapped; everywhere else resellebee reads the labels and fills what it recognises.

Closest match, flagged

A dropdown without your exact word? It picks the nearest by meaning, in the language of the form, and marks it for you to check.

Your typing stays

Text you already wrote in a field is kept. Filling twice never doubles a choice.

Step-by-step forms

On a form that comes in steps, the next step is filled when you move on to it.

A writer that respects limits

Title and description are composed from your item’s facts and cut to each marketplace’s length limit.

AI rewrite on your own key

Subscribers can have the listing rewritten by AI on their own key: Anthropic, OpenAI, Google, Mistral, xAI, DeepSeek, Groq, OpenRouter, Together AI, or a model on your own computer. The key stays in your browser, you pay the provider directly, and we add no markup.

Your agent does the prep

Connect your own AI agent over MCP. It looks up marketplaces, does the sums, writes the listing and sends the item to your extension. You still press Fill and Publish.

Where is it listed?

Tick each marketplace an item is listed on. Your item list shows it at a glance.

Ultrabuy: know the profit bee-fore you pay.

Open any listing. resellebee reads the price and does the sums a flipper does in their head, without the mistakes.

Profit on the page

Buy price, shipping, the seller fee where you will resell, and what is left: profit, return and margin.

The most you should pay

Name the profit you want. It tells you the highest price that still gets you there.

Saved searches

Save a search. Next time you open it, listings that were not there before are counted and outlined.

Same thing, other markets

One click searches the same item on other marketplaces in your countries, so you see what it really sells for.

Your fees, your numbers

Set the fee you actually pay on each marketplace. The sums use yours, not a guess.

Your browser, your data, your button.

resellebee takes over the typing and the sums. The decisions stay yours.

What it does not do

Said plainly, so nobody buys the wrong tool.

  • Publishing a listing for you. You press Publish yourself.
  • Taking a listing down on other marketplaces when it sells. You tick where an item is listed and take it down yourself.
  • Working while your computer is off. It runs in your Chrome, on the page you have open.
  • Phones and tablets. Chrome on a computer only.

You press Publish and Buy

resellebee fills fields and does sums. It never presses a marketplace’s buttons, and it opens a page only when you ask it to.

One permission

The extension asks Chrome for storage and nothing else. It runs only on marketplace sites.

Items stay with you

Items, photos and searches live in your browser, not on our servers. Export a backup whenever you like.

No marketplace passwords

It works in the tab you are already signed in to. Your marketplace logins never reach us.

Free account, no card

The free plan fills 3 different items every 30 days on every marketplace and keeps 2 saved searches. The deal calculator needs no account at all.

You choose the marketplaces

Switch on only the marketplaces you work with, by name or by country. resellebee stays out of the rest.

See it on your marketplaces.

216 marketplaces, 100 of them read live on 14 November 2026.