Ebay GN-Anyone Know This One?

I don't like auctions with "User ID Kept Private".
I used to deal with a fella locally who sold British cars on Ebay.
He had a few user ID's and would bid up his own auctions with them.
I'm not saying this GN guy is doing that but it I've always avoided that sort of auction after seeing such activity.

Doesn't Ebay have bidder protection now?