Bottom line is if he has "sold" 13 of these things, as claimed, then he's made €4450 already. It's easy to create a fake feedback report too.
Got a bunch of mates, relatives, family pets etc to make false purchases, say they are happy with the end result......... Robert's your fathers brother, he's a highly trustrd dealer.
Google his name and you'll find he's sold other things totally unrelated.

I did report someone last year for listing "Genuine N900" mobile phones (the Chinese one's I must add) He'd evev listed the specs of the genuine N900 but added dual sim capabilityy

Sad fact is, despite everyones best efforts there's still a few spineless individuals out there that still try it on.