Shampoo

I knew for a year that Iceland is expensive. Especially expensive with the most nonsense things like bread (3 euros for a normal supermarket bread), haricots vert (at least 5 euros for 100g.) and so on, but shampoo, just simple cheap simple shampoo 7 EUROS?! Next time my bag is going to be filled with shampoo from the Netherlands, proper cheap shampoo...never realised Iceland was that expensive...