I am guessing you mean in Australia, yes there are quite a few unfortunately, never really liked corns myself (a bit of a nothing snake).
A couple of people around my area that I have bought enclosures off of, they have openly admitted to having corns.
I guess if you fancy it and you see it's for sale and keep it under raps why you have it then people can get away with it.
As much as I love the King Cobra and Burmese Python(normal phase), I would not chance it as my other herps would be confiscated as well.