Yes, please do keep reminding me of that! haha, I keep forgetting. I believe there's a few good brands that have Canadian dealers. It is ridiculous how all of a sudden when you cross an imaginary line, shipping suddenly doubles. Ask around though, some people already have dealers up north for ya.
Also, I saw another guy is selling some mint SA-12s for $120+ shipping, I referred him to you. I know they're a bit bigger, but I figured you could at least consider it.
And b-stock is subs that have either a cosmetic defect, or have been shipped and returned, etc. All never or barely played, and warrantied to be 100% functional. When I got mine, it had a tiny little scuff on the surround that you wouldn't notice unless you were looking for it.