I bought the adapter in January to test different Pentax 645 lenses on my 5D Mk2 while I was waiting to receive my 645D.
In the process, I discovered that I was getting better results with the Pentax 645 lenses than with the Canon zoom. Anyway, it served its purpose and I don't need it anymore. Mint condition.
Paid $83.47 on Amazon. Asking $45 net to me.