From what I understand, that's what a combo goes for at Five Guys.
Outside of online shopping (SlickDeals) or grocery digital coupons, our culture doesn't really promote coupon cutting. I do it for fast food, but it's considered something that only poor people or seniors do.
The only fast food app I have is Taco Bell, which normally I'll visit just a couple times a year (the Cravings Box is a good deal, no app needed). But I got suckered into the app because of their "Taco Lovers Pass" for $10. During October, that pass gets me a free taco each day. Admittedly I'm tired of their food by now, but I've gotten 10 free tacos with a week to go. I've bought a few of the $2 burritos to round out my meals, but sometimes I just want a Taco Supreme and it's on the way home for free.
I'm a light eater, but I wouldn't consider the $2 burrito a "meal." For a modest lunch, that burrito and a taco will do the trick. Obviously we don't consider it quality food, but anybody in this thread who claims McD's is 5x better in quality is crazy.