If you still think Auto-Tune isn't a cliche as an effect in music production, then, man, are you in luck. Music123 has a $60 rebate for anybody upgrading to Auto-Tune EVO from EFX. That's right, save $60 to either never practice singing again or to make your singer sound like Cher or T-Pain. Free shipping.

Antares Auto-Tune Evo Pitch Correcting Plug-In Software : $319 - $60 Upgrade MIR = $259
Antares Auto-Tune Evo TDM Pitch Correcting Plug-In Software: $519 - $60 Upgrade MIR = $459

And because we care, here's an auto-tune tutorial: