Amazon.com has the Logitech QuickCam Vision Pro Webcam for Mac for a good price.

Pricegrabber Price : $113.24 ~ $140.74 Shipped

1. Amazon Price : $96.83 Shipped
2. Rebate Price : -$20.00 ( Exp : 05/22/10 )
Final Price : $76.83 Shipped After Rebate