I've lived almost my entire adult life on a minimum wage budget (and/or close to it).
I think it really depends a lot on where you live. I live in NYC now, and fruits and vegetables here are about 75% cheaper than when I lived in the midwest. I can get a pound of blackberries for $2, when I'd pay probably double that for just a few ounces of them in my home state. Takeout is almost as cheap as cooking (filling, tasty meal for $4-5), which helps drives down costs when you're exhausted and don't have any more energy left to make something.
I think it really depends a lot on where you live. I live in NYC now, and fruits and vegetables here are about 75% cheaper than when I lived in the midwest. I can get a pound of blackberries for $2, when I'd pay probably double that for just a few ounces of them in my home state. Takeout is almost as cheap as cooking (filling, tasty meal for $4-5), which helps drives down costs when you're exhausted and don't have any more energy left to make something.