Valve's Gabe Newell gave the keynote address at this year's Design, Innovate, Communicate, Entertain (DICE) Summit about the cost of games, the effect of piracy, and how to reach new players. Valve undertook an experiment recently to test how price affected the sales of their popular survival-horror FPS, Left 4 Dead. They Reduced the price by 50% on Steam, which "resulted in a 3000% increase in sales of the game, posting overall sales that beat the title's original launch performance." They also tested various other price drops over the holidays, seeing spikes in sales that corresponded well to the size of the discount. This will undoubtedly add to the speculation that game prices have risen too high for the current economic climate. G4TV ran a live blog of Newell's presentation, providing a few more details.