I just looked up grocery prices at what is considered the most expensive zip code in the US- 94027.
I picked Walmart because I think would be the most widely comparable.
Roma Tomatoes are $1.08/lb, 8lb bag of russet potatoes 4.42 each, onions 3lbs $1.84, butter lettuce 12oz for 2.78, radicchio, $1.90/lb, 5.5oz of green onions $0.86, button mushrooms $1.91, asparagus 10oz for $2.98 (asparagus is one of the most expensive vegetables btw), Chicken thighs 3.5lbs for $6.89, 2x whole chickens $11.04, chicken leg quarters 10lbs $6.88, canned tomatoes $0.46 each, beans $3.44 for 4lbs., lentils $1 per lb, long-grain white rice $0.72 per lb, bell peppers $069 per lb.
Let's see what King's County has on tap, the second most expensive zip codes in the US. Let's do, 10013. Pretend we live right on Greenwich, by Chambers.
Let's hit up C-town. Looking at their weekly circular-
Whole chicken, $0.99/lb, plum tomatoes $0.99/lb, romaine 0.99/lb, avocados 4 for $5 (avos are expensive AF), 20lb bag of rice for $10, grapes $1.99/lb, maseca 2 for $6 in 4.4lb bags (what a deal!), assorted pasta 3 for $3 1lb bags/packages, etc, etc. This is just looking at the closest grocer off the top of my head
weekly paper.
I am not disputing the prices might be more or less in your particular location. But keep throwing address at me and I will find reasonable ways of building a food budget for a relatively small amount of money.
Cooler on top of the fridge or put in the back of the fridge like everyone else.
My master bathroom is larger now than the first apartment my sister and I shared in Williamsburg. I could rent that space for 2-3 grand in NYC. Gotta hustle.