My city requires these $2 stickers per can of garbage. On the surface some people complain, but it’s a way to encourage people to produce less.
I have no idea what the per-bag fee should be, but it seems like a great way to get people thinking about what they actually need to bring and not socializing the cost of those who decide to bring a lot.
In the US people use the same amount of plastic is being used and most are not shy to pay a few cents for per bag except for the same minority who are conscientious and bring their onw reusable bags. Imo the cost of comfort is too cheap. If bags costed $1 people would start to bring their own reusable bags in larger numbers.
I've seen a recent documentary about Lausanne (Swiss) I think where people were ticketed 150 euro for throwing household trash into the public bins (though it wasn't clear how it was determined it was household trash). It seemed excessive but I understand how this could teach people quickly to do the right thing. And yes, the household bags had to have stickers or a special bag that cost around 2 euro.
I have no idea what the per-bag fee should be, but it seems like a great way to get people thinking about what they actually need to bring and not socializing the cost of those who decide to bring a lot.