Here is some price info for advertising:
Blabbermouth.net banner ad: 100,000 banner exposures = $500 ($5/1000)
http://www.fixionmedia.com/mediakit/blabbermouth.net
Metalreview.com banner ad: 100,000 banner exposures = $400 ($4/1000)
http://www.fixionmedia.com/mediakit/metalreview.com/
Fixion Media Satellite ad: 1,000 clicks = $400 ($.40/click)
http://www.fixionmedia.com/mediakit/.../standard.html
MetalJudgment.com banner ad: 1 month =$100
MetalInjection.net: 1 month =$50
Metal Faction Radio 3-month ad package:
Rotating banner & Two 30 second commercials = $22
I'm not sure how effective an all-in-one Oak Knoll banner ad would be...seems like too much information for something that people only take a glance at. Most people are interested in checking out bands, not labels. I don't think I've ever seen a banner ad featuring many different bands of a particular label. Idunno...let me know if I'm wrong.
If you want to combine your ad investment into many different bands, just make several different banners and allocate a percentage into each. For example, instead of spending $10 on one monster Oak Knoll banner ad, invest $2 on a BH ad, $2 on a Shroud ad, $2 on a Warblade ad, etc.
Jeremy, Let me know how much you want to invest total, and how much per band.