I did about $1.50 a day in college. My first job down in this region I averaged something like $2-$3 a day. I rarely ate meat, but thankfully I was able to get a bunch of 94/6 ground beef for <$1/lb and stocked up. Otherwise it was a bunch of carbs and starches (rice, pastas, breads, oats), some fruit and veggies here and there (usually frozen), some beans, and lots of processed stuff. I also did a lot of my own baking and focused heavily on Asian recipies since I found many that seemed to use several base ingredents in a large variety of flavors. There was also this brand of chicken hot dogs that I got for $1 a pack, and the same brand of chicken bolgna for $0.69/lb. I shopped exclusively at WalMart.
Nowadays I've changed my diet a lot, and eat a lot less processed foods. I still eat some, of course, but not nearly to the extent that I used to. I'm not concerned, though, since my blood pressure and blood work are absolutely ideal, as is my BMI. And, hey, thanks to this medication I'm on for my hypersomnia I eat less anyway
Prices have really gone up around here, though, especially after the WalMart I normally shop at did a remodel. I still avoid shopping at grocery stores since the ones around here remain 2x-5x more than WalMart. Sometimes I save money at Sams/Costco, but more and more things are coming up close to break even in price -- I just get them in bulk instead.
Ironically, I've found that our Trader Joe's has become price competitive if not with Walmart, if not outright cheaper. So we're getting more and more things from there. Mostly fresh stuff like breads, eggs, fruits, and veggies as they're cheaper and higher quality. They also have some good frozen foods like cheesecakes, so long as you avoid some of the meals-ready-to cook packages that are really overpriced. There's a farmers market very close to my house, but their quality can be hit or miss. I'm not sure on their exact prices as I haven't shopped there -- just my girlfriend -- but from what she says they seem to be within the range of Trader Joes. Since TJ's is more consistent with quality, we're buying most of the fresh fruits and veggies from there.
Anywho, I think right now our two-person budget is $300/mo and I don't think we've ever used it up. Now that I eat anywhere from 400-800 calories less in a day (if not more), we save even more
