This article on bit-tech is by me:
http://www.bit-tech.net/gaming/pc/2010/05/24/how-much-should-dlc-cost/1
Feel free to retweet or otherwise promote it:D
My point, which is pretty much glossed over in most discussions about DLC, is that variety is good, and the free market will decide. Some DLC is overpriced, some is underpriced. Some price experiments for games are mental, some are a complete giveaway (like Portal for free). Eventually, the free market gives us the right answer.
As an example, I think that $25 for a single horse mount in WoW is flipping MENTAL, when I worry about charging $6 for an extra GSB race. But… the free market has proven me wrong, people bought it in droves. Who am I to criticise either people who think a mount is worth $25, or Blizzard for setting a price that maximises their revenue?
I’m, just a bit sick of kids describing game develoeprs as nazis for not releasing everything they make for free, and thus venting :D