There might be. There was a delivery delay on Proto-Advantage's Netduino Pluses and I think they cautiously listed a few fewer Netduino Pluses for sale than they were allocated. They ship to both Canada and the United States. I would write them and ask if they have any left. If they do, it'll just be a few--but that's your best bet.
I think MakerSHED pretty much sold all of theirs at MakerFaire NY over the weekend.
Chris
(I wish there was a crying icon). I would have bought from Proto if I'd known Maker was going to sell them on their site. The Plus would have been perfect for the presentation I'm doing end of October.
I'll call Proto and see if they happen to have any left in stock... Maybe I can scrounge on up that way.