The Coin Discord server pretty much unanimously do not like them or their model. They're almost a gag at this point. Too many on there have likewise experienced Atlas throwing on bids till they win, only to find later Atlas just list at double their cost on eBay and their website. It's one thing to lose to other collectors, but they're just flippers with obscene markups, and accumulate so many gorgeous and rare pieces in the process. Very distasteful, and though some people may champion such a model, many of us don't.
Good point, to note to anyone handling my collection, that Atlas instructively not be involved ha.