why do people buy q7 food?

Day 2,071, 15:39 Published in USA USA by ComputerSpeaker

i am tryign to figure it out, a person can keep buying q1 food, so they do not need a large storage, and q7 food requires twice as much raw as does the other food per energy, making it have a lot higher marginal cost making it more expensive per energy restored.

so why is the price so high and why do people buy it at the high price?