Scholarschoice.ca Scholar's Club
Scholar's Choice, Canada's largest educational toy store, has a special offer when you join their membership club, which might be worth considering.
The membership deal is this: you have to pay $10 for the yearly membership card, but if you join up online they will credit your account with a free $10 amount to spend. You'll need your credit card at the ready as you sign up, and then they will credit you with the free $10 within 48 hours.
So here's my take on this - if you were going to be buying something from Scholarschoice.ca anyway, then you might as well sign up for the yearly membership. The $10 cost and the $10 credit offset each other, and you get the yearly membership thrown in for free (technically). Then with your membership, you're entitled to 10% discount store-wide, plus 20% discount when they have a special member events day.
Members get 10% discount off ebooks too, so something to consider for the many ebookers on Bargainmoose.