Canon has a yearly amazing rebate program; if you buy three qualifying items you get a 10-30% rebate on all of them. Rebates cover many things (including camera bodies), but you have to buy things by January 15. Here's a list of all the prime lenses that are covered by the program. Prices listed are the cheapest at Amazon, rebate is the maximum 3x rebate.

LengthApertureWeightRetailRebated
20f/2.8405g$420$375
28f/1.8310g$400$355
50f/1.4290g$315$270
85f/1.8425g$340$295
100f/2.0460g$390$345
135f/2.0L750g$890$785
200f/2.8L765g$660$585
300f/4L1190g$1150$1015
400f/5.6L1250g$1100$980

All lenses have ring USM autofocus except the 50 which is micro USM. The 300mm is also image stabilized. More data on the Canon lens chart PDF.

techphoto
  2005-12-31 19:49 Z