I don't know... maybe there are some manager, who know, that this guys can be really good. Maybe it's because of the new auction system - since the release I got a lot offers with at least 5T (before that, there were a lot 0T offers).
Or I'm lucky, to be on a tokenbuyer-server...
Keyattribute raise 100%, gray attributes around 50% -> the older they are, the less the gray attributes raise. (not confirmed, just noticed by myself)