BuyDig offers the Sony 1080p HD Action Camcorder, model no. HDR-AS20, for $98 with free shipping. (Amazon offers it for the same price.) Outside of the deals below, that's the lowest total price we could find by $100. Features include 11.9-megapixel still photo mode, waterproof housing, 150-minute battery, and SteadyShot image stabilization.

A close price: Best Buy and Sony offer it for $99.99 with free shipping.

Update: It's now sold out at BuyDig; however, Amazon still offers it for $98 with free shipping.