We grow a lot of our own fruit & veg. What I buy is through smaller supermarkets - IGA, Foodworks, local people; not Aldi, Coles, Woolies.
Sweetcorn disappoints. I used to be able to buy whole cobs in their husks. Now I have to take either cobs with the top cut off (to expose the top corn kernals), one side of the husk removed (to expose a half to quarter of the cob) or cut into short uniform lengths with all silk & husks removed packed on a foam tray in cling wrap. The kernels start to dehydrate, mould starts to form, it takes extra labour (reflected in extra cost), I have to dispose of non-recyclable packing as opposed to the natural husk which goes in compost, an edible part is discarded, particularly the pre-packed variety where the butt & top tapered end are removed.
Silver beet loses its nutrients quickly after picking. I never buy it in shops & only eat my home grown.
Tomatoes - my husband likes the shop bought Gross Lisse, but won't eat my home grown GL's, Oxhearts, Romas, Cherry etc. He has grown accustomed to the bland taste and finds my home grown too flavoursome.