Murray, It was worth in my case. I was looking for a certain 150, with the condition and avionics package, that I just couldn't find here in Canada.
What you've got to do is,, find one that you think you might like in the US,, add 22% for exchange, plus add 5% for GST, and then add in another $5000 to $8000 for the import inspection/registration.
So, a $20000 US 150 by the time you're done will cost you between $31000 to $33000 by the time you are done.
This does not include the misc taxes you might have to pay in your province, plus the misc cost for a registration mark and other costs like transportation/fuel ect. Beleive me there are,, and then insurance on top.