Vote for politicians that campaign on consumer protection legislation.
Here in Europe, it's been mandatory to show a price related to a reasonable common base point (e.g. liter, kilogram, piece, usage-unit for laundry detergent) adjacent to the actual product's price for many years now. You can go and use 1/10/100 grams/milliliters though for small scale packages where that is reasonably common (e.g. spices), and that's it.
Fun fact, that piece of legislation significantly contributed to Brexit propaganda, the campaign was based on "the EU wants to take away our pints/stones/pounds/whatnot".
Here in Europe, it's been mandatory to show a price related to a reasonable common base point (e.g. liter, kilogram, piece, usage-unit for laundry detergent) adjacent to the actual product's price for many years now. You can go and use 1/10/100 grams/milliliters though for small scale packages where that is reasonably common (e.g. spices), and that's it.
Fun fact, that piece of legislation significantly contributed to Brexit propaganda, the campaign was based on "the EU wants to take away our pints/stones/pounds/whatnot".