There's another thread about them with the same types of comments as this one. I wanted to bid on something in an auction a few months ago but wanted a back scan. There was no way to get in touch with them - no response to email, no one answered, no VM possible - so I didn't bid and the card sold for a lot less than I would have been willing to pay so not sure why anyone would bid on their auctions or consign with them.
https://net54baseball.com/showthread...sirius+auction