You could sell the CD’s in “lots” of ten or something. May not get as much money, but you might be able to get rid of them quicker.
Years ago I needed four good shipping cases (2’x2’x3’). I got on the military liquidation site and waited for an auction near me. I got some really nice Pelican and Hardigg cases for $50 a pop. Except I had to buy 12 of them! (I sold a couple to friends and use some for storage, etc.)
Tired that, doesn’t work, more often than not, no matter what is in there, people won’t bid. Which is funny, I offer a cast CD from a Pixar movie in a lot, no bids, sell the CD alone, $350 is the typical realized price.