6ave via eBay offers the Canon EF 24-105mm f/4L IS USM Autofocus Lens, model no. 0344B002, for $639.99 with free shipping. That's $49 under our December mention and the lowest total price we've seen. (It's a current price low by $55.) It features image stabilization and three aspherical lenses.
If the price of ice cream plunges, more people will buy it, right? Not so fast. Watch this video to learn how the human mind influences buying behaviors.