no surprise there. I very rarely eat at fast food joints anymore, mostly because some of the places I DO like to go to every now and again (KFC chicken strips or Wendy's Mandarin Chicken Salad) just end up giving you so little food... and you pay upwards of 5 bucks for the shit... plus you get a hugeola drink you don't even want nearly that much of, and half the time it's straight out of the warmer where it's been sitting for who knows how long.
I much rather go to Subway or something... the prices are better, the food is a little better, and it's got more nutritional value to it maybe somewhere. Other than that, just go home and make a PB&J with whole wheat bread
Really though... it's just not even close to cost-effective no matter how many factors you plug into it.