>You pick your stuff, you weigh it yourself, you choose the right tag (without anyone looking over your shoulder) and then you go to a (nowadays potentially aut

>You pick your stuff, you weigh it yourself, you choose the right tag (without anyone looking over your shoulder) and then you go to a (nowadays potentially automated) cashier. The US has its faults to be sure, but it's not that different here for buying produce these days. A lot of things had little stickers on them which can be scanned directly, and for other things the automated cashier lets you type in or look up a code number and then set the item(s) on the scanner/scale to be weighed. If you really wanted to cheat, it would be trivial to buy a bag full of some expensive item and type in the code number for some cheap item.