I pick at ripe. I have blems. Four grades: store perfect (hahaha), a few minor bits like catfacing, a few blems and minor bugbites, and the Is It Homemade Salsa/Sauce or is it
compost?
Nothing can compare with the home grown, as you can market heirlooms that are tasty but don't take to shipping... I admit the only thing I use on my tomatoes is Blossom End Rot spray as soil in this area is notorious for low calcium. I add gypsum but still can have problems. Else they eat compost and rain
water and
city water only if there isn't
enough rain water (they basically pull out of the aquifer and occasionally give the tower a shot of chlorine)
So often market garden will also be very organic and natural. Usually too at end of day, there's "I don't want to drag it home" prices. Plus sometimes there will be sale on 'it's not perfect, it's edible today and NOT at all tomorrow' blems. Person I got a roast tomato recipe (drizzled with olive oil and herbs and slow roasted chunks) from that had a stall near her that would
sell a whole brown grocery bag of blems and seconds for cheap. If she took them home and processed immediately it was great quantities cheap.