Walmart offers the Logitech C170 Universal USB Webcam with Microphone
, model no. 960-000880, for $18.88
. Opt for in-store pickup
to dodge the $4.97 shipping fee. That's tied with our July mention and the lowest price we could find by a buck. It features a built-in microphone, 640x480 resolution, and shoots up to 15 frames per second.