Ha, I had a chance to work in the "blueberry world" over a decade ago. Ridley's blueberries are bred for flavor first and truly are exceptional. Most of the comments are correct, generally fruit is grown for looks first, yield second, and spoilage third. Flavor doesn't even factor in.

If you're in N America, here's the farmer that grows his cultivars: https://familytreefarms.com/fruit/blueberries/ Best chance of finding them in stories is during the March-April window in the US.