Quote from: Toxonaut on May 26, 2014, 09:11:10 AM

instead of paying at the end of your shopping everything in bulk, pay individually for each item...
each containing an item to sell (e.g. a harddrive, or an apple)...
Upon payment to the individual box, the lock opens and the customer can remove the item inside.

We have those now, it's called a vending machine Cheesy

What you described could be achieved by having rows and rows of vending machines in a supermarket, and it won't be a supermarket anymore. Besides, I do not want to shop there.