The Buy or Pass calculator is the members tool for The Income Lab. You give it the item, the brand, what you would pay, and where you would sell it. It gives back the real numbers: the platform fees, your shipping, the net profit, the return on your money, and a plain verdict of buy or pass. It runs the same math across eBay, Poshmark, Mercari, Whatnot, and Facebook Marketplace, so you can see which one pays best.
The point is simple. Know whether a flip makes money before you buy it, not after.
How to get in
The calculator is for paying members of The Income Lab. Your membership is what turns it on.
- Join The Income Lab. It is the full reselling system, platform by platform, plus the community.
- Create your sign-in on the tool with your email and a password.
- Your account gets switched on for the calculator, and you are ready to run the numbers on every find.
Already a member
Sign in and start checking your finds. Open the tool, create your account with the email you want on file, and pick a password.
It is built to answer one question fast: is this a buy or a pass. Want to see exactly where every number comes from, how new and used are handled, and the fee math for each platform? Read how the calculator works.