My LFS used to take them off my for $2.00 eatch store credit, last time I went though they only took them for $1.00 eatch SC. Not bad though, for convicts. Ask around, you never know. I can tell you right now no Petsmart, Petco or chain petstore will take them, you're gonna have to go to an independent shop. You might not be able to get money for them though.