just FYI, canon warranty is NOT transferrable.
The 24-105 f/4.0 L IS is a wonderful lens. Very sharp and has the newer more advanced "IS" drive. I don't mean to criticize your price, but keep in mind that this lens is part of the Canon 5D lens kit and they seem to be for sale quite a lot. Seen them go for around 800 in the states for a used one.
Post it up on craigslist, there is a photography section there.