I'm hooking up with a guy coming in from Oklahoma for the Turlock swapmeet at the end of this month, he does dropped axles

His website is droppedaxles.com

Anyway, you can check his siite for the prices he pays (50-75 bucks each) for cores to drop. I've got 4 or 5 he'll take, figured if anyone had any laying around and wanted to make some spare coin, I could just take one load to him.

Check his site for details, email him for Q and A, seems like a nice guy, just spent 10 minutes on the phone with him.