Canon offers the factory-refurbished Canon EF 40mm f/2.8 STM Camera Lens, model no. 6310B007, for $99.99 with free shipping. That's tied with our refurb mention from last month and $49 below the best price we could find for a new one. This 0.3-lb. lens is for use with most Canon SLR cameras. A 1-year Canon warranty applies. Deal ends October 12.