Resale Profit Math
A research-first way to think about fees, shipping, and uncertainty before buying a discounted item.
Start with conservative comps
Use sold comps, not active listings. Then discount the expected resale value for fees, shipping, returns, and time.
Model downside
The best deal is still a bad purchase if the market is thin, the box is damaged, or the return window is weak.
Keep records
Track observed price, final purchase price, resale channel, net proceeds, and lessons learned.