Depends on how many people live in your household and what you eat. You can probably spend even less if you're only cooking for one and most meals are 'beans and rice'-level.

I'd assume that the hard part is finding an affordable place in a somewhat walkable neighborhood in the US, especially if you don't want to live in a one-room apartment.

Either way, the $50 are really not the important part. It would still be true if you paid $200 and could save $50 by shopping at cheaper supermarkets that are further away.