Wait, what? The product (or its shelf, whatever) isn't labeled with the price? Is that common in the US or is it a 7/11 thing? I guess it's communism to make displaying the price a legal requirement. Competition will sort it out...
7-11 shelves have price labels, except for when the employees at that shop are too lazy to put those labels up, which is fairly often in my experience. The franchised 7-11s seem to be better at it, the 7-11s owned by corporate are a shitshow because many of the employees don't care and there's no owner around to make them care.