I've never heard of a single instance of a hybrid as being sold as anything other than a hybrid, except with stupid crosses (kingsnake x corns, indians x burms) etc.
Walls, carpondros, burmballs, superballs, comas all seem to get correctly labeled.
On the other hand, incorrect information on localities or subspecies is a common issue with many herps.
Are you KIDDING ME?! I want a 12' long blood python! That would absolutely be a dream snake of mine. I won't even get into how you might have an incorrect perception of blood pythons and their "attitudes", but I will say that I quite enjoy snakes with a bit of... "personality"