THis is why I'm so glad that I read random posts like this... so the next time someone offers me some $$ for a domain name... I've learned from others who have experienced this. I wonder why this guy was banned though.
I just got one of these emails yesterday. They thought maybe they'd pay $12,000. At first it seem genuine then they asked me to get my domain appraised at a firm they suggested. It seems like BS to me, they probably own the appraisal service.