Be careful w/ the hets. I would not advise just buying one at a show because its there and cheap. Do your research, find a trusted breeder (BOI search as well). Many people have gotten burned on false hets, and I could only imagine not only the monetary loss of buying a false het, but the loss of time and effort feeding housing etc etc that goes into it. Not saying there arent many reputable breeders out there, there definitely are, but making sure you buy from one is well worth the extra invested time and effort.
Your 100% right... I am leary of buying a het from a show because I could get screwed and it take a couple of years to find out.