Are you on the US or UK site when making the purchase? Check the flag top right of the site homepage.
I have tried going through the US site and the price never changes, up to the point of entering credit card details.
If you already have an account with Magix - was this set up using the UK site? If so then you may need to edit your account details first before placing your order.
I'm an US Client. I'm in USA. I do have un accaount, with address for residence and Bank account as well in US.
I already have 2 products from Magix - Videoeditor and Photoeditor and love them.
The price is in US dollars for the softwere for wed design , but
if I go to buy a product with the hosting , wich what I wanted to do , the price in the list is US dollars and I'm in US magix site, after I checked as a existing client and the price is in British pounds, during the check out.