From Amazon
Canon EF 70-200mm f/2.8L IS II: $2099 - 4% reward - $300 Rebate = $1715.04
Canon EF 100mm f/2.8L IS: $875 - 4% reward - $150 Rebate = $690
From BH, about $100 more than the best I've seen but still pretty good:
Canon EF 24-70mm f/2.8L II: $2099 - 2% reward - $300 Rebate = $1757.02