This is a rather interesting idea, but I do want to press the issue that paper bags honestly aren't that much better. They decompose, sure, but still take up resources and space in landfills.
Anyone interested in adding paper bags to the bill?
I can't speak to paper bags unfortunately. The use of paper bags is not something I've had any real experience of; nor can I speak to the environmental impact of same.
And a clarification as to what plastic bags we're talking about? Are we talking about those at grocery stores to carry home our purchases? Ziploc bags we use to take our lunches to work?
My primary target would be those used to carry groceries but generally to encourage movement away from disposable plastic bag use in favour of heavy reusable bags or other alternatives.
I'm quite willing to consider exceptions on a case-by-case basis.