15$ a meal is pure insanity for 400-600 kcals, I eat 6-8lbs of chicken a week and my weekly grocery bill is right around 50$.
I live in Indiana, the average household income is $45,943, even just one person earning that you're taking home 35,482$ a year which is about 97$ a day which makes just 1 of these meals a day 10.2% of your net income.
Most of the country is not tech workers drawing high 5 and low 6-figure incomes.