I would imagine that different markets make a huge difference.
My only two points of reference are Denver, CO and Kansas City, MO.
In Kansas City, Whole Foods produce and dairy prices were anywhere from 100-200% more than their Price Chopper / Hen House / Hy-Vee equivalents. Meat was marked up around 150% from their commodity supermarket price with a marked increase in quality and variety.
Denver has a roughly 30% higher cost of living than KC, and here the Whole Foods / Sprouts produce and dairy goods prices are competitive to slightly-higher than the King Soopers (local Kroger subsidiary) / Safeway prices. Meat is marked up around 100% from the commodity supermarket price, but with the same distinction in quality and variety.
This is all anecdotal and subject to my terrible aggregated memories of shopping trips, but this subject is fascinating to ponder.
My only two points of reference are Denver, CO and Kansas City, MO.
In Kansas City, Whole Foods produce and dairy prices were anywhere from 100-200% more than their Price Chopper / Hen House / Hy-Vee equivalents. Meat was marked up around 150% from their commodity supermarket price with a marked increase in quality and variety.
Denver has a roughly 30% higher cost of living than KC, and here the Whole Foods / Sprouts produce and dairy goods prices are competitive to slightly-higher than the King Soopers (local Kroger subsidiary) / Safeway prices. Meat is marked up around 100% from the commodity supermarket price, but with the same distinction in quality and variety.
This is all anecdotal and subject to my terrible aggregated memories of shopping trips, but this subject is fascinating to ponder.