well the most expensive item he has a feedback for that i saw was a MX-10000 that went for a little over 7k, and he got a positive for it.
and the vast majority of his feedback, good or otherwise, is audio related, infact most of his negatives seem to stem from him selling fake clothing, in which case i agree with his retorts, if you're paying 40 for something that is normally 400 and you're in such a hurry to 'score' that 'mispriced epic win' that you ask no questions, well, you had that coming.
I'd buy from him, but I'd proceed with caution.