Amazon has the Wii DJ Hero Bundle with Turntable: http://www.amazon.com/gp/product/B0028ZNX7M
for $39.99 shipped.
Product Features
Platform: Nintendo Wii | Edition: Bundle with Turntable
* The ability to battle your friends or jam together at home or online
with two turntables or one turntable and a Guitar Hero guitar controller.
* Game bundle including software for Wii and the exclusive DJ Hero
turntable/mixer controller that allows players to scratch and mix their way
to hero status.