RonPaul.com is probably worth significantly more than that. I believe the value is likely in the millions.
HOWEVER, that does not mean anyone is entitled to try to sell Ron Paul his own name online. Ron Paul is the only owner of his name/brand/trademark both offline and online.
Just because a trademark .com or famous name .com is available does not mean it can be registered, or purchased, then sold to the owner of the name/trademark. That is referred to as cyber squatting, which was specifically made illegal in 1999 with the anti cyber squatting act.