Creative labs has their Creative Live! Web Cam Notebook Pro with USB cable in a 2 pack for $20 plus shipping. Shipping is around $10.
Specifications:
- 640x480 (VGA) sensor
- 1.3 Megapixel photos*
- Smart face tracking
- USB connection (USB 2.0 compatible)
- Creative headset for clearer audio
- Secure PowerGrip attaches to displays of up to 0.5” (14mm)
- Manual focus ring
- 180° adjustable camera angle
- Creative Advanced Video FX for cool video effects
- Includes SightSpeed for premium video calls and video mails
- Includes OrbSecure for remote monitoring
- Works with Yahoo! Messenger, Skype, MSN Messenger, and other compatible instant messaging services
- 1.3 Megapixel photos interpolated from native VGA sensor.
Link
2 Pack Creative Live! Web Cam Notebook Pro with USB cable $20 + SH 
