There's a rebate on Canon lenses starting tomorrow according to Link: http://www.canonpricewatch.com/
Here are the leaked amounts / prices. Rebate can be doubled if buying HD SLR.
EF 24-70mm f/2.8L USM - $100 - $1229 AR
EF 16-35mm f/2.8L II USM - $100 - $1514 AR
EF 70-200mm f/2.8L IS USM II - $200 - $2174 AR
EF 70-300mm f/4-5.6L IS USM - $100 - $1419 AR
EF 100mm f/2.8L Macro IS USM - $80 - $916 AR
Still more expensive than buying last year, due to price increases...