I have had a few bad purchases from Supermarkets this year.

My main complaint was that they look fine on the outside, even after I had peeled them, but cut them in 2, or 4, and quite a few were black in the centre.

Not a lot you can do, you can't take them back as you don't peel a whole sackful, and you'd feel silly going with 2, or 3 potatoes. You can't save the bad ones and then take them all in because they'd rot even more, before you do.

I've had plums that don't ripen, and just go off, same with peaches and nectarines.