You buy the stuff in grams, but you can also buy joints a peace.
The prices differ to what you order. Super Skunk is cheap and strong and one of the most popular smokes around here. But most for the young kids that starting out, but still a lot of veterans smoke SS also still regularly.
2.5 grams kost you about 12 Euro. These are grams from Kilo grams, not sure if you guys have the same grams.