A4C offers the MT Tech Spy Pen 4GB DVR Hidden Digital Camcorder for $17.95. Coupon code "WINTER10" cuts it to $16.16. With free shipping, that's $4 below our September mention and $5 below the lowest total price we could find for a comparable spy pen. As well as functioning as a normal pen, it features a 4GB internal memory, USB plug, 640x480 AVI recording format, and rechargeable Li-Ion battery. Deal ends March 5.