I know you specified that you aren't interested in taking it across the border, but if you do fold it up and move it to the other side of the bridge, at a sale price of $12,700 (I'm including the new PF), you'll pay $635 at the border.
If you ship it, the buyer will pay $1,651 (assuming it's staying in Ontario).
My suggestion is (if that's the case) that you meet at your house, display the game, take $635 in cash from the buyer, take it across the border, and then give it to the buyer for another $13,000.
I'm assuming you'd be willing to come down a little from $12,700 to anyone else so this way you can sell it for even more than what you're asking, to a happy Canadian customer.

Just a suggestion to help you both save on the taxes that would otherwise go to our great government.

Good luck with sale!