Yeah, where I am, they simply added the requirement that stores have to charge at least five cents for any bag they give you.
It has greatly reduced the amount of single use bags without the undesirable side effect of thickening single use bags so that they can masquerade as reusable.
We pay 25¢ in Menlo Park, but stores tend to just charge for one or two even if they give you way more than that. It feels like a "deal" to pay on 10¢ in neighboring cities...even though that is of course a terrible deal for a bag.
It has greatly reduced the amount of single use bags without the undesirable side effect of thickening single use bags so that they can masquerade as reusable.