What they don't know doesn't hurt them. Do you know how many dealers send reptiles throught those companies in unmarked boxes....lol
That is one of the most irresponsible things I've ever heard! I tell you what, what they find out hurts our hobby, have you ever thought of that? Not to mention what the animal must go through in an an-marked box.
Don't be cheap; pay to have your animals properly shipped in a labelled box so you can protect them and the public.
Can you imagine the headlines if some UPS guy thought there was something suspicious in the box and opened it up. The snake would probably be killed on the spot and the shipper and receiver would probably be charged and it would be even harder for legitimate people to ship their stuff.