Buy.com has the Logitech Cordless Desktop S 530 Laser for Mac for $29.95 shipped after rebate.

Pricegrabber Price : $70 ~ $94 Shipped

1. Buy.com Price : $69.95
2. Use Google Checkout to get $20 off $50.
3. Rebate Price : -$20.00
Final Price : $29.95 Shipped After Rebate