These are like $2000 new here with the optic... So after the currency exchange and the Canadian gouge tax, I would say $4400 is fair market value.
You won't be able to export this rifle to the United States, or probably most owners of prohibited firearms would have done that by now. The US has import restrictions on foreign made "assault weapons" (which are determined by a points system). That is why new foreign designed military style rifles are now being either manufactured in the US, or have enough American made parts installed to get around the import restrictions.