To the extent that petrol stations are like convenience stores (which they typically are), the ones in my European country sell freshly baked bread, pastries etc. and have deli and hot food counters (and yes the beef they sell there is all grass fed). They also sell fresh fruit and while I don't know what's considered "unorganic" when it comes to this, it's all similar to the so-called "organic" stuff at whole foods. I don't know about variety but that isn't what I was talking about, I was talking about quality.

One time I was in a Walmart Supercenter (or whatever it is they call the huge ones) in Michigan. I had been there a few times but I couldn't find the fruit & veg section any more, they seemed to have moved it and put Halloween candy in it's place. After burning 10-15 minutes searching the whole store, I gave up and asked a staff member where they put it. "Oh we got rid of that sorry". It's literally the biggest supermarket in the city and you can't buy an apple or a banana.

There was a fancier place I used to go to in that city, Fresh-something-or-other. The kind that models themselves after Whole Foods. Everything time I went there, they only ever had green bananas. I mean, totally inedible, days away from being ripe. Every time.