As one of its daily deals, UntilGone offers the refurbished Belkin Netcam 720p HD WiFi Camera for $16.99. Coupon code "NETCAM-AFS" cuts that to $15.99. With free shipping, that's the best price we could find by $14. It features motion detection, infrared night vision, and remote viewing. Deal ends December 19.

Note: It's backed by a 30-day warranty, although it's unclear who covers it.