Yep, most of the artists only did around 200 each, dan cooney did about 1000 and a lot of them are fairly average quality and are extremely similar, hence the reason they dont sell for too much, but if you pick up a sean pence, its worth at least $200+ katie cook is also fairly popular as well and the full color sketches are worth $$ due to the majority of the cards being just your standard black and white (or blue and black/white as it is with Heroes 2)
Ahhh
So the sketch cards are actual REAL sketches not re-prints of the original?