I need a bit of help here: I'm looking to purchase a used 30D and lens from Adorama. I live in Canada. The shipping and everything would come out to 600.00. One time, though, my mom bought sheet music from the US and ended up paying 75.00 in duties and taxes (!!). We don't want this to happen again. Can anyone tell me a definitive answer (not a guess) about how this works, and what I might end up paying?