Logitech.com has the Logitech Cordless Optical TrackMan Trackball for a good price.

Pricegrabber Price : $59.75 ~ $64.99 Shipped

1. Logitech Price : $59.95 Shipped
2. Use coupon code logi_cotm_72911 to get $24.96 off ( Exp : 8/1/11 )
Final Price : $34.99 Shipped