This is sort of a generic question but I'm curious to know how much power a standard PC/Gaming rig really uses. I consistently get high power bills that are generally 50 dollars higher then anyone I know. I only game around 2 hours a day and sometimes not at all and I keep everything else shut down when i'm not around yet my bills are always high.
Power consumption really depends on what components you have in your PC.
I used a Kill-A-Watt to measure my current PC in my sig some time ago which also includes 6 hard drives and 2 DVD burners. While gaming I believe my computer draws about 270w - 280w of power and that includes one of my 26" LCD monitor and my Klipsch 2.1 ProMedia speakers.