hmmm...if only your premise is true.

Most cheap foods, all dollar meals, made when you order, are so high
in fats, sugars, cholesteral and calories that in the long run your
hospital bill for the health problems will quickly cost more in the
time and money cooking at home will ever cost.

OK health issues aside, i had a grilled chicken breast with noodles
and cheese and broccoli.

total time cooking 30 minutes, with 15 minutes cleanup. Total time
eating out, well after the where do you want to go discussion, 15-30
minutes going to a fast food or resteraunt 10-25 minutes waiting for
food.

OK forget about time, how much did it cost me?

Chicken breast from 10 pound bag approximately 20 pieces (of verying
sizes) $9.39/per bag .47 cents
Noodles lets say .20 cents
cheese maybe .40-.80 cents depending on how much you shred (2 minutes
with a shredder)
broccoli (the actual expensive item) $1-1.50

you can spend a little more money every once in a while to add a
little more flavor, spices rubs and what not.

Time spent enjoying a meal with family at home-priceless.