PSA 10 Ripken & Mattingly....selling price??

1966CUDA

I just got back a PSA 10 Ripken 1987 Topps sticker as well as a 1991 regular OPC Mattingly PSA 10...any idea on what these would go for?? ( I also included a scan of a 1988 Canadian Leaf McGwire in PSA 9..these seem pretty tuff too!)

Thanks-
Claude

1966CUDA

Any ideas?