Canon announced a mail-in rebate program for a big bunch of their popular lenses and speedlites. The mail-in rebates (up to $300) end November, 14, 2013. Below is just a few of the popular lenses but for a full list of lenses, check out Adorama (Instant Rebate), Adorama (Mail-In Rebate) and B&H Photo (both Instant and Mail-In Rebate).
Canon EF 8-15 f/4L ($180) B&H Photo | Adorama
Canon EF 17-40 f/4L ($100) B&H Photo | Amazon | Adorama
Canon EF 24-70 f/2.8L II ($300) B&H Photo | Amazon | Adorama
Canon EF 16-35 f/2.8L II ($200) B&H Photo | Amazon | Adorama
Canon EF 24 f/1.4L II ($200) B&H Photo | Amazon | Adorama
Canon EF 35 f/1.4L ($150) B&H Photo | Amazon | Adorama
Canon EF 50 f/1.2L ($180) B&H Photo | Amazon | Adorama
Canon EF 85 f/1.2L II ($200) B&H Photo | Amazon | Adorama
Canon EF 70-200 f/2.8L IS II ($300) B&H Photo | Amazon | Adorama
Canon EF 70-300 f/4-5.6L IS ($200) B&H Photo | Amazon | Adorama
Canon EF 100-400 f/4.5-5.6L IS ($200) B&H Photo | Amazon | Adorama
