[zhte415]

Because the poster is presenting in perhaps a difficult way to understand. Listed prices are inclusive of VAT/sales tax, there's a single price listed. Companies can reclaim VAT/sales tax from the tax office on presentation of valid receipts. Depending on product, sales taxes vary from 4% to 1Xs%. Pretty similar to how reclaiming VAT works in the EU.

Individuals could, for example, request a discount from a restaurant for not requesting a tax receipt (discount being in the form of some free Sprites or other small token). Smaller places might accommodate this, larger ones would not.