Angry Grimace
Two cannibals are eating a clown. One turns to the other and says "does something taste funny to you?"
You really think they can charge you a completely different price than you agreed? Seriously?
Yes. They can just cancel your order and all you can really do is whine about it.
I love how people have a double standard where they get all huffy about people who steal, but then immediately jump on "discounts" they know to be some kind of mistake, which is basically the same thing.