I’ve no doubt it’s easier for companies, but I don’t really care about making advertising easier for them. I prefer to make life easier for consumers. Regional taxes and fees and levies aren’t unique to America. How they handle this in other countries is either regional advertising or normalising the price nationally and potentially eating a loss in some high tax areas. The price can also settle a little higher in some regions if the product has low elasticity of demand. Either way, it gives consumers much more information up front.