I'm guilty of not checking, and I'll only question something if is well out of line (like a $10 squash).
I TOTALLY agree with you though. The prices need to be correct for everyone and making sure that it is corrected is a community service.
Bravo.
But I have to ask (cause I'm a debating kind of gal <g>), had the price rung up much lower, and you had noticed it, is it still a community service to get the price corrected for everyone?