Any Boots will sell them for around 8 euro and without even blinking. Actually most chemists will sell them, my local chemist will order them in for me. They are not a presciption item, you really don't need one. McCabes got a bit sniffy with me once, saying that they only sold them to diabetics, because people were "abusing them, going overboard on stupid fad diets". I said I wanted them to make sure I didn't go overboard, then they did sell them to me. But Boots is by far the least hassle.