The lens tend to add $800 to the kit price plus tax. I just checked and I was wrong about the extended warranty pricing. It is $469 for the body only and $599 for the body/lens. Yikes, that is a lot of ca$h extra.Henry's offer an additional 3yr warranty on the 24-105 kit for $469 - does anyone have any experience with this? Is it worth it (besides the obvious, "if you don't ever need it - it was a waste of money")?
Good copies of 24-105 can be had for 850-900 on the used market so I don't think almost a $500 premium for insurance would be worth it unless you are planning to give it a real beating for the next three years. Also consider that you may want to resell within the three years and you may not be able to recoup that money having to compete with other ones priced below $900.
If the warranty is for the whole kit, it may be different a bit. This is a really expensive camera after all so an extended warranty may be justified if you are planning to make money with it.