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Unfortunately, in checking both Wal-Mart Canada and Wal-Mart United States wedsites, it seems it is only availables in the U.S.
Yes, you can buy them at Wal-mart and Mastermind Toys in Canada. Wal-mart has Series 3 and I think Mastermind has Series 2 and 3.
Wal-Mart came to Canada in 1994 in Mississauga, Ontario.
About 30,000
Yes, at least at Walmarts in Canada you can.