I was just at a thrift store and picked up some apparently-used Sony Betacam SP 10s and 30s for $0.50 each, along with a sealed Sony S-VHS master quality tape.
I assume the Betas are used, but since they aren't labelled I'm guessing not by a professional production. Figured I would offer them up here if anyone wants to first take a look and see what's on them, then use them for their own purposes. Cost + shipping.