Earlier quoted context omitted.
Here in Norway a half litre or smaller container has a deposit of 2 kr, bigger containers are 3 kr (22 and 33 US cent respectively). But it isn't the size of the deposit that drives the return rate (95% or more here in Norway) it is the ease of doing it. Here all shops that sell such goods are required to accept the containers in return even if they were not purchased in that shop and even if they are of a different…
Saw that at your neighboor's in Copenhagen, and after the first outrage of paying +50cts per drink, I understood that I was seeing a glimpse the future… If littering is equivalent to throwing money, you simply won't do it. Weird side-effect: homeless people might ask for your empty bottle and do the collection. Not sure how I feel about that though…
That's kind of convenient actually IMO. I get rid of the bottle, I don't have to give them cash. Win-win.