Amazon.ca just put Street Fighter IV up for pre-order at $59.99 and $79.99 respectively. This is both $10 cheaper than any stores in Canada.
Use the promotional code MAPNEWNCSAVE and get $10 off the Amazon.ca price. Shipping on the order is free since the order is over $40.
You can only use the code once though. Not sure if this works for Amazon.com users.