Man. Maybe I'm lucky, but the five guys near me is 11.29 for a full sized cheeseburger with no sides. 12.69 is the most expensive one with bacon but I usually just do the little one which is 8.79.
They do charge an arm and a leg for the fries, though. Which I guess is to be expected since their measurements for a small fry is "all of them"
Have I just gone to a bad Five Guys? I went to one once last year and the burger was mediocre at best and the fries were greasy to the point of being sickening. I haven't gone back since.