I have to admit that I like this domain, although .com would be a lot better, I still think poker ads network has a nice ring to it.
Ive not had a great deal of joy with .net poker domains in the past, with my best sale for a two word .net being around the $100 mark.
So based on the fact the .com is parked and this is a .net. I would say around low to mid $xxx be my appraisal.
good luck with the domain