Also bought a used P226 which was fine aside from some honest holster wear. The grips were scuffed up, so I replaced them with wood ones. Again, it's a better shooter than its owner.
Take a good look at the weapon you're about to buy and you can get some good deals on used guns, CPO included.
I have a CPO P226 and I love it. It has never jammed or FTF. When I got it, it looked like it had never seen the inside of a holster.