IMO, the big money hedge funds would go after something like COMC which has a large warehouse of cards and actually does the full legwork rather than a site like sportlots where all of the cards are still owned and mailed by the original owners.
COMC has declined a bunch of buyout offers in the past, I've heard. The Beckett refusal back in 2013/14 timeframe is one they're famous for.
There is a new competitor trying to put sportlots out of business, effectively, by trying to recruit their largest sellers to transfer to their new site:
https://www.blowoutforums.com/showth...373268&page=39
Scroll down to the bottom of page, but that thread is a good one to read through if you plan on using it more.