Amazon offers many products in multiple countries at different prices. In Europe there are 5 different Amazon sites from where you can order. By comparing these offers and getting the lowest price you can safe money. Even though you have to pay shipping fees when ordering abroad the total price is often lower. For ordering on Amazon in another country you can simply use the login credentials you use in your own country and pay via credit card.
This site compares the prices, calculates shipping fees and converts currencies to get you the lowest price in Europe.