official Web site for Ion's professional Drum Rocker (as recently revealed in Game Informer) lists a $299.99 price for the deluxe drum controller. Only the Xbox 360 version of the set is currently available for pre-order, though Wii and PS3 editions are "expected to ship later in the year," according to the site. It's important to note that this is not the official drum set that will be packaged with Rock Band 2, but rather an officially licensed deluxe set that works with both Rock Band games.
While $300 may sound steep (soon, you could get a whole 'nother Xbox 360 for that price), Ion sounds like they've gone to great lengths to make sure serious virtual drummers get their money's worth. According to the site, the four high-durability, quiet, velocity-sensitive pads can be mounted and rearranged in any position and even outfitted with "professional drum brains" from Alesis. Add in a metal-reinforced kick pedal (with velcro and spikes to prevent slippage) and two packaged, mountable cymbals (with the option to add a third) and you've got what's unquestionably the Rolls Royce of drum controllers.
The web site also has a short video and some detailed photos of the set, so check it out and figure out for yourself whether it's worth dropping three Benjamins.