Prices are different than I am entering in Data

I've cancelled all Taxes as I don't charge any but the prices I have entered in the Products Data are showing at a discount on the website. Does any one know why this would be?

I've not had this problem before and as far as I can see, the settings are the same as another of my websites which show the prices correctly.

Check your System -> Localisation -> Currencies

Make sure your default currency is set to 1.00 exchange rate