"only pay the food price"
Friend, everything you list has to be paid when you go out too, and more!! There is,
and so on that has to be paid when you go out too. You don't need to pay for that when you eat at home.
The reason it can be cheaper outside, sometimes, is due to "economy of scale".
yoh bro i think you misunderstood me
i meant we pay for the food price and we get what we want
if we cook ourself we should add the spending on other things like power/gas etc etc
to the ingredients we bought too;p