What an incredibly bad platform. I will continue to buy things on Amazon, but not sell -- precisely because Amazon is friendly to buyers and downright hostile to sellers.

New sellers should go through EVERY one of the 100+ settings on ever page with a fine-toothed comb. Note that by default, Amazon sets every setting to your disadvantage -- from presuming Professional account (and billing you $39.99 and making you jump through financial account linking and provision of SSN to opt out) to setting every option against you and in buyers' favor (liberal return settings,etc.).

I sold one textbook on Amazon. The final result is that the buyer essentially treated me as a lending library and borrowed it for 25 days, studied, then shipped it back. There was nothing inaccurate about my listing, they just "didn't like it." I paid for the outbound shipping. I paid for the return shipping. I have the book back now, in rifled-through but hard to quantify reduced quality (from shipping x2 no doubt as well, as buyer did not pack it as carefully as I did). I still have to pay FEES to Amazon for this privilege of being used. So now I'm back at square one with this book I wanted to sell, just lighter by $40. I'd try to sell it again, but then I might well be out $80.

Caveat venditor.