Unit prices are the law where I live. I'd say I am very price-conscious shopper. I have a clear feeling about unit prices of many products. But I absolutely don

Unit prices are the law where I live. I'd say I am very price-conscious shopper. I have a clear feeling about unit prices of many products. But I absolutely don't care about package size(1) or package price. (1) of course within limits suitable for our household. It doesn't make sense to buy stuff the won't be consumed before it's getting unusable. In the very old days in Germany chocolate was only allowed to sold in certain fixed sizes. 100 grams bars had >98% market share, although several other standardized sizes were allowed, too. With EU free markets that regulation had to be abandoned because it hindered free market access. I don't know whether unit price information was introduced at the same point in time, I wasn't living there at that time. But I still hate to see 90 grams and 282 grams chocolate bars where I live now.