This has always been a worry with me. From even before I wanted to start breeding, I always asked how do these breeders sell an animal to some of these people. At shows you'll see people walking around with a BP around their neck :/ or hear how these people think they should care for them.
I already plan on doing a very detailed care sheet and quizing the buyer.
Maybe there should be a program of replacing all of all the wild caught animals with the normals. I can't imagine how much death shows up in a box of wild caught.