The difference is your typical composition/density and limited storage space. I live ~15min walk from an inner city Safeway and the prices are much higher than

The difference is your typical composition/density and limited storage space. I live ~15min walk from an inner city Safeway and the prices are much higher than the box store or Costco where we do a weekly shop. Fresh veggies and fruit last at least a week, but because they're trimmed & packaged probably count as "ultra processed".