VideoGamePriceCharts.com, a site that tracks average online prices for video games and consoles, has released its year-end report for 2009, and if you were buying and selling games speculatively (we all do that, right?), you'll want to check it out. Okay, so maybe you weren't picking up the now-discontinued Demon's Souls Deluxe Edition because you hoped it would get rare, but if so, you're in luck: That game topped the list, raising in value from an MSRP of $69.99 up to a high of $116. Grand Theft Auto IV's Lost and Damned retail box (which contained a code for the DLC) is another big collector's item, and if you were so lucky as to nab a copy of Bass Pro Shops' The Strike (with Fishing Rod) for Xbox 360, then reel in the money, because it raised in value over 50%. Whew! Welcome to the exciting market of video game price speculation!
For a little more practical information, you can also see which companies and consoles kept their value in 2009 -- turns out MTV, Atlus and Nintendo games all did well at resale, with the Wii (surprise!) topping the market for overall value held among its games. Of course, you should really be buying games (and supporting developers) for their quality, not for their resale value, but it doesn't hurt to figure out which ones will give you a few more bucks in return when you're done.