Why is this useful? You can argue for both, but to argue for only showing the tax free price is just hiding the price; It's not like you can ask for the tax to

Why is this useful? You can argue for both, but to argue for only showing the tax free price is just hiding the price; It's not like you can ask for the tax to be taken off. In the UK we have a default all included price on items for example in supermarkets, but in wholesale shops targeting businesses prices will be shown as with and without VAT as businesses can reclaim it. Makes perfect sense, reduces cognitive load, makes comparison of prices easier, means the consumer doesn't need to understand the implications of the tax system on every purchase.