A complete method for buying and reselling used iPhones: how to verify a device before money moves, how to compute what you can pay, and how to read the result honestly afterwards.

Thirteen modules, sixty-three lessons, twenty-one working documents and seven spreadsheets you keep. Every figure is either sourced and dated or computed in front of you.

It does not tell you what you will earn. It teaches you to compute it for your own market, because a price from someone else’s market is the wrong number.