It does exist with that one site linked on the front page: LiteBit.eu. possible to buy and sell (not only Blackcoin). Used it yesterday when i needed a quick bitcoin to get me more cheap BC, worked smooth with only like 3% margin for them on the BTC (changing though, as i saw). They are still young as it seems and would surely not buy 100k BC i guess.

An exchange like Bitcoin.de would of course be better, but for that we need to grow some more.