Well, if you're buying DJ Hero 2, might as well pick up an extra turntable. The wireless turntables are sold solo, (was right next to the DJ Hero 2 display in my Gamestop,) and are on special right now for $9.99. So, 2 turntables and the game for $40 + tax/ shipping. Got it today for me and the wife, awesome price!!
Edit: Sticker for wireless turntable still showed $19.99 for me but rang up for the sale price...also on the website for $9.99.