Proposal: Brick-and-mortar stores, at least, should have to list in-store prices inclusive of tax.

Unintended consequences: None?

Forcing brick-and-mortar stores to show a higher price including tax than that shown by online stores seems like it would have some unintended consequences. It would likely push more people towards online purchases even if the final price is identical.

I deliberately browse AirBnB's Australian version because it tells me the actual cost of the listing, inclusive of tax and fees.

Prices are already quite different between online and in-person shopping.