Deals All Year 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 tied with our May mention as the lowest total price we've seen for this lens. (It's a current price low by $10.) It features image stabilization and three aspherical lenses and includes a lens hood and pouch.