His main flaw is that he is not reliable. You cant say whether you get your order within a week or within 3 months.
I had some deals and in the end I got what I wanted. Communication / Delivery time can be a pain in the ass, though.
@Pingu: We dont have much places here to buy stuff. Video Games sell bad, and I mean BAD, in germany. Some resellers also told me that they gave PCBs from around 2000 to trash.
So we have the choice of importing (600 to 700$ shipping a cab) or buy from him which is cheaper. Or you have some luck and find a collector who sells you items.
Greets
Dennis