Fulllove360 via eBay offers this 6.5-Foot LED USB Endoscope Video Camera for $4.29 $4.25 with free shipping. That's tied with our March mention and the lowest price we could find today by $2. It features six LEDs, 640x480 resolution, and 30 fps recording.

Note: It ships from Malaysia so allow up to six weeks for delivery.

Update: Shipping is now 15 cents.