Seems the first standalone Rock Band peripherals have begun slipping silently, like blister-packed ninjas, into the retail channel. Now available in stores across the US are extra mics for the game, which contain not one, but two surprises. First: they're $50. No, thanks. I'd recommend SingStar mics, they're cheaper and better. Second: the packaging looks (we say looks because it's awful small) like it says it's for PS3, 360 and the Wii. Wii, huh? That's certainly new.