Tracey,
Here in BC, we don't pay duty on anything valued under 60.00. Over that, we do.
Once, I ordered some advantage (doggie flea stuff) on ebay from Australia. It was a GREAT deal, but when I picked it up at the P.O.....they charged me duty that made the stuff no deal at all in the end....
But under 60.00 and you'll be OK.
That's the extent of my knowledge on the subject..
Linda