6 Bucks

I don't eat out all the time since I enjoy cooking, but I do eat out frequently. It seems that where ever I go I'll end up spending 6 bucks and change.

Subway: the subs I'd get are 6 bucks and change.
Chic-Fil-A: two 8 piece nuggets, 6 bucks.
Chipotle/Qdoba: burrito, 6 bucks and change.
Tacobell (rare): two chicken quesadillas, 6 bucks.
McDonald's: 10 piece nugget meal, almost 6 bucks.
Panera Bread: sandwich for almost 7 bucks.
Etc, etc.

Sushi will run me 9 bucks, as will Chinese food like orange chicken or sweet and sour chicken.

Economically it's of course cheaper to cook. I can get like 8 large chicken breasts for about $10, and one is big enough to fill me.
Or a tasty personal sized DiGorno 4-cheese pizza for just $3 and that will nearly fill me.