So, PlayBooks haven't exactly been flying off the shelves... anywhere. Not even in RIM's native Canada. But that might actually change over the nex few days as BestBuy, Walmart, Staples and Future Shop have chopped $300 off the price of the QNX -based slate. The sale lasts from November 16th to the 22nd in Quebec, and the 18th to the 24th in the rest of Canada. Now, they're probably not going to eclipse the iPad in sales anytime soon, but a $200 16GB PlayBook is a much more compelling proposition than a $500 one . The WiFi only 32GB and 64GB models are also being discounted to $300 and $400 respectively which, in case you're not mathematically inclined, means the 64GB BlackBerry tablet will actually cost less than the 16GB version normally does. Obviously, though, you'll have to be quick -- we're sure this fire sale (tundra sale?) will have stocks running pretty low.[Thanks, Shawn]