My guess is that it could easily be obtained (although not necessarily the cheapest alternative, but probably easiest) through
Amazon.ca (Note link directly takes you to the DVD in question). You can use the account information you already established at the regular Amazon.com.
Don't forget to use a coupon with that order to help defray the shipping.
MAPVSQ2SAVE5 $5 off, exp. 8/31
MAPSCTELE5BP $5 off, exp. 8/31
MAPMBNABANK5 $5 off, exp. 9/30
Using this handy dandy currency
converter, the final price with shipping would be around $23.33, today, (rates change every day, a good reason to wait until right before it releases to place your order) with the expedited shipping (which I recommend over standard... the price difference is only $1 CAD, but it really makes a time difference in how quickly you get your package!)
Hope this helps!