Canon offers the factory-refurbished Canon EF 70-300mm f/4-5.6 IS USM Telephoto Zoom Lens, model no. 0345B002, for $259.99 with free shipping. That's tied with our December mention for the lowest total price we've seen. (It's $69 less than the best deal we could find for a new one.) It features improved Image Stabilizer Technology compared to the original Canon EF 75-300mm IS zoom lens, as well as a lighter weight and smaller diameter. A 1-year Canon warranty applies.
Adorama cuts $50 to $200 off a selection of Canon L series camera lenses via mail-in rebates. Plus, all orders receive free shipping. That's the first such offer we've seen on this large a selection of Canon lenses from Adorama, yielding several price lows. Rebates expires March 29. Some best bets:
Amazon offers the Canon EF 50mm f/1.8 II Camera Lens, model no. 2514A002, for the in-cart price of $99 with free shipping. That's the lowest total price we could find by $2, although we saw it for $20 less last spring (for new Rakuten customers only). The lens weighs 4.6 oz. and is intended for use with Canon EF-mount SLR cameras.