Several people have mentioned it but I'll say it again. Don't ship UPS because it's very possible to be backbilled on the customs charges. I sold a camera once to a guy in Canada and he refused to pay the custom charges even though we'd spoken about them. You really have no worthwhile options except to pay. And it wasn't a trivial amount. That was on top of all the forms I had to obtain fill out to start with. USPS will save you the hassle.
Selling to Canadians
I've read about nightmares selling equipment to our neighbors north of the border and would like to have some guidance on how best to handle such a transaction. Is there an exchange rate issue? Also, what's the best way to ship (cables) -- and how are the duties handled? Is it a percentage of the sale price and, if so, do they go by the price new or the resale price? Thanks a lot for your help.