Just noticed that Jade Empire: Limited Edition is on sale at Future Shop until July 28th for $29.99. If you want the game this is a great deal (I think I payed $49.99 to $59.99 for it). You should be able to find it in store or you can order it online here.
The Limited Edition features: An extra player character (for a total of 7), additional combat style, foil outer wrap for the DVD case, making of documentary and playable demos of other Mircosoft Game Studios Xbox games (MechAssault 2: Lone Wolf and Forza Motor Sport, as I recall. There's also a Single Player demo for Conker: Live & Reloaded on the regular game disc).