It's interesting to read the stuff about coupons because Canadians don't really do coupons. A couple of retailers have come in from the U.S. and tried coupons instead of low prices - they ended up lowering prices or leaving the market. When Walmart came to Canada they said they would never have sales. They have sales here all the time now.
The Canadian market is almost completely 'everyday low prices' plus end-of-season sales. Rebates to some degree, but not like I see in the U.S. - and coupons are truly a foreign phenomenon. We get occasional coupon packages in the mail, but nothing like what I've seen in U.S. papers.
The differences in the marketplaces are fascinating (if you're interested in this kind of thing).