Let me explain from both sides of the fence on this issue:

I worked in a pet store, it is not the employees place to judge who knows what about what animal, if it was, they would never get sold. Also, you will ALWAYS have an employee who dont give a care about where the animal goes, as long as it gets sold. For a pet store to administer a "test" for them to decide whether you, the buyer are capable/eligible, it would almost seem not right. If they take a sudden dislike, you would not get the animal.

But, from the reptile trade point of view, if it were required to take a "test" in pet stores, it would open up a so to speak "black market" type thing going on, ppl would get tired of that pet store side of it, and would find other outlets to get the animals they want. If the big breeders of these animals were to "test" perspective buyers, and start turning ppl down, the breeders would also lose $.

I think that there is a huge problem with ppl buying animals they know nothing about, but lets be honest, how many of us really knew what we were getting into 100% before buying the animals, part of having them is being WILLING to learn how to care for them, then being MOTIVATED to give the right care to begin with. Part of thr "fun" of having them is learning how to care for them and doing so. It all comes down to being responsible in owning animals.