Hittime_3c via eBay offers this Lighter Spy Camcorder for $4.68 with free shipping. That's a slight drop from our January mention and the lowest total price we've seen. (It's the best deal today by $6, excluding other eBay vendors.) It features a 720x480 video resolution, built-in microphone, rechargeable lithium battery, and USB.

Note: This item ships from Hong Kong and is expected to arrive in three to eight weeks.