When Listia changed the credit rate around six months ago, it messed everything up. It is difficult to sell some cards to even cover the shipping. I know what you mean.
I got the steal on Listia a while back...got a Stephen Curry court kings rookie auto for 3500 credits...now it would easily hit 2 million plus. Its gotten out of hand.
Wow that was a steal. Any auto of Curry is worth a lot right now. I have a few Curry cards. I have a lot of nice basketball cards like Bill Russell, Bill Walton, Steve Nash, Dennis Rodman etc. I probably will list some of those soon.