That is the mag that copied shamelessly pirateclick's Troubadour.
AFAIK, it is a limited release in Spain - testing the waters. That lame company is famous for not completing their series. First (and second, sometimes) volumes are usually a good deal. After that, it is expensive as Hades, harder to find, and sometimes they just don't complete it.
I wouldn't mind having the first black knight (2.99, I think).. But I THINK it was 6 after, and 8 for the rest, so... Besides, I don't particularly like reading in spanish, so it would be kinda pointless. Thouh they ARE pretty.