The first snake is most definitely not the same snake as in the other pictures. The rest of the pictures do look like the same, but not the first. And neither of those snakes appear to be 100% corns. For me, that would throw up a red flag. You may not be getting what you think you're getting. If you like either snake and don't mind that it isn't a pure corn, then that's a different story. But if you want a corn snake, I'd recommend looking somewhere else. When I was looking for a corn snake, I contacted these people and all were very nice and helpful, even though I did not end up buying from them in the end.

http://www.jonigarcia.com/
http://www.corn-utopia.com/
http://mikescornsnakes.tripod.com/