I bought one of those infamous TASI TA8133 lux meters on AE last year. I received the crappy new version and carefully documented how it literally wouldn’t even do what was advertised on the box (can’t measure under 60 lux). The seller countered with an offer to refund my payment as long as I paid for return shipping to China on a $20 item. I had a couple more back and forths with AE’s dispute resolution team and they eventually gave me something like a $2 refund because the colour was “not as advertised” (TASI slightly altered the colour scheme on the crappy new version). The whole process was a joke, and the level of proof they required to demonstrate anything more than the most basic technical issue (e.g. doesn’t turn on) was absurd.