http://www.coffeeshop.freeuk.com/ACDfrmGu.html Look through the various coffee shop listings. The site itself does not list prices, but if you take a look at the reviews you will get an idea of what it's like at that particular location.
i seen on you tube some videos of ppl going into the shops and videotapping the menu . think it was like 25 euros for the top of the list: White widow or Shiva. the hash i think was 45.