I have bought from them once, and was very happy with my purchase. It was a sub-adult female ball pythons, and she arrived very well taken care of, from what I could tell. BTW, N.E.R.D. also charges to tour their facility.
Trust me, had you seen thier store before you bought those animals, you would have looked elsewhere. This isn't a tour of the facility, it is a fee to get into see the animals you will potentialy buy.