I have been surprised by how stable the price of Demigod has been at Amazon.com. It has been US$35 from release until now, never dropping below that amount even as the sales rank has slipped to 3,572 (as of today, http://www.amazon.com/Demigod-Pc/dp/B001N1C1J8/ref=sr_1_1?ie=UTF8&s=videogames&qid=1251469967&sr=8-1). I followed the game for months before buying, assuming that the price would come down, especially after some of the initial lukewarm reviews. But the price never did drop--I just got it this month for $35.
It would seem that reducing the price to about $25-30 would help move the game better, as opposed to sticking with the original price. I suppose that GPG/Stardock is following some kind of marketing strategy with the pricing. Still, it just seems to me that more people might be willing to purchase the game if the price came down a bit.