GP mentioned "sticker price", so I suspect they possibly meant physical goods or services. If you're in a retail store, there are no real obstacles (except for

GP mentioned "sticker price", so I suspect they possibly meant physical goods or services. If you're in a retail store, there are no real obstacles (except for business unwillingness to be honest to the customer) to calculate and disclose the final price. A store knows where it's located, and that's where the sale happens.