The Vernon, BC Wal-Mart has about three or four boxes left of minifigs, though I'm guessing that it's been worked over for the Spartans. (I was clever enough to buy three the first day - hey, I need a set and I'm buying for a friend who's had no luck in the States. And then one for good measure, I guess.)
There's a distressing amount of opened packets there, though - a good half-dozen or so. I wonder what will become of them. Anyone looking for a Spartan should have been able to find it by the incredibly distinctive diamond spear tip, so that's either laziness or something else. (One empty bag was for the Motorcycle Cop - go figure that one.)
I'd tried finding an intact one in Nelson, BC over the weekend, but their Wal-Mart is one of the small ones and they weren't getting any. Rough.