> prices should be stated with taxes included or not In the US, sales tax differs wildly from state to state, and even from city to city. If you always had to

> prices should be stated with taxes included or not In the US, sales tax differs wildly from state to state, and even from city to city. If you always had to include tax, you couldn't have any TV commercials where a company boasts about their price on something they sell, because it would be impossible to know how high the sales tax would be for every person watching. Places where tax always has to be included usually has a national sales tax or similar, making it possible to advertise prices with tax included.