mwave offers the Agama 1.3-Megapixel USB 2.0 Night Vision Webcam, model no. V-1325R, with a $3 mwave Gift Coupon for $8.99. With free shipping (and assuming you'll use the credit) that's tied with our August mention and the lowest total price we could find by $26. It features 640x480 video resolution, 1.3-megapixel photo resolution, four infrared LEDs, and a built-in microphone.

Note that this item may not function as a normal color webcam; it's made for low-light and darkness.