i've made a post about his before, but it sort of used to be an öre separator. it's just that people have forgotten, so now you get stuff like "23,50:-"

I'm just working off context here, can't really defend the Swedes. It seems a little unusual to me too.

But I can't complain too much, because there are plenty of weirdoes in my country who use single dots for time, which I find even worse. Especially because the dot is also often a decimal separator. So depending on context 9.25 can be 09:25 or 9 hours and 15 minutes.

they use :- instead of currency symbol because then you don't think of it as money, you are more likely to happily pay a bigger price