I'm rather surprised they are still in business. They used to have a pretty big hobby presence in the early 2000s, but largely self-destructed when they failed to pay consignors (myself included).
And for as much trouble as they were, their authenticity was never much of a concern. All of the autographed stuff was certed by PSA/Spence and the Game-Used merchandise by Lampson/Bushing/Taube. Looks like they are self-authenticating these days, however.