They should ban hidden taxes too. The sticker price should be the final price.
I remember shopping in Japan. The price on the tag, is exactly what you pay (same with services, like hotels). Since this is Japan, it's a high price, but no surprises. Also, the service is amazing , and they won't accept tips. If you leave money on the table, they will chase after you, to give it back.
The price excluding tax is the only one you can read at a distance, that draws you in. As someone from the UK who is used to seeing price tags show the final price you pay at the till, I was constantly disappointed that items weren't quite such a bargain as I'd first hoped.
On the whole there are still many things that are much cheaper than in the UK though :)