I hope this isn't against site rules but I wanted to make sure I had a complete list of the online auction sites. HA is listed all the time but I wanted to make sure I was looking at all of them.
eBay ProxiBid - if you are VERY VERY careful. This is just a bid portal to 100s of smaller auction sites. Some have good merch, accurately described and pictured. Some don't.
Most of the proxibid stuff is just companies sponsoring sales disguised as auctions. I've seen so much stuff go to crazy prices. So crazy, it almost had to be shill. I can't prove anything other than someone paying $195 for an NGC MS70 ASE 2014 - plus auction fees - is well....uh... Yeah... I think with 17% fees and shipping, that coin would have been close to $250.