Before you buy stock in volume, run it through this first. It will show whether you’re entering a live market, or signing up for five years of supply.
This is the Reseller’s 2-Month Rule.
A simple way to test whether demand realistically supports what you’re about to buy. I built this because I repeatedly bought stock that looked good on paper, only to watch it sit. That’s usually because I misread how much market demand there really was.
This tool makes that calculation simple and mechanical, so you don’t end up tying up cash in slow stock.
How to use this rule
- Search your product on eBay/Vinted/etc.
- Note active listings and recent sold count.
- Enter those values below.
- Decide before you buy.
The Reseller’s 2-Month Rule
Quick calculator to test whether a niche is saturated and what a safe purchase cap would be.
Built from real trading experience, not theory.