You could set one tax included price, so the actual revenue you get would vary slightly in different places. Costs already vary based on location so I don't see

You could set one tax included price, so the actual revenue you get would vary slightly in different places. Costs already vary based on location so I don't see a huge issue there. Of course this does change the incentives for localities setting their sales tax, and they might be inclined to set them higher if the cost isn't borne by local residents. I don't know if that's a bad thing, if that money improves local services and / or lowers other taxes.