Where I'm at, the price for the boxes are minimum $8 or $9, most of the combos are $11-$15 before tax, and they change their menu so often that I can't be bothered going there. 3 years ago the prices were a lot closer to what you're seeing.

I used to go there pretty often, but with the prices going up particularly in the last few years and with the additional inconvenience of having to learn what their new gimmick of the week item is and what box or combo items they've removed to make space for it, I just can't be bothered. Also because eventually I realized that there's a local Mexican restaurant that sells bigger, better burritos for cheaper in a gas station closer to my work than Taco Bell is. Only downside is them not having a drive through.