Been there and not doing that again.
Back in June of 08 we went to EP because my wife wanted a Boa. They had some Bolivians in that my she was really interested in. So we bought one. Had him tested like we do all and any new reptiles we get and he tested positive for Cryptosporidium.
Well we got a hold of Ken because we wanted to warn him so he doesn't have more problems if the other Bolivian Boas had it too. He told us to bring in a stool sample so he could take it to his Vet. Well we never did hear anything and had to keep calling and finally we were told that his Vet tested it and found nothing(what a surprise).
We asked that he have his Vet to fax over a copy to our Vet so we could compare. He said sure and we never heard from him again and our Vet never got the fax.
When we brought in our stool sample we took a better look at their collection and wasn't really that impressed. I saw a couple of dying snakes that looked majorly dehydrated. Mites were all over the place. It took us close to 6 months to eradicate the mites we brought home with us from the store. They were recommended to me but there is no way I would recommend to anyone.
Save your money and buy off of a breeder. There are a lot of great breeders out there that have great stock. At least you know what you're getting. Stay far away from any of the Pet Stores. Thanks.