Well, that's great to have your personal "price scout". :)
It is, however, much easier today with the internet. Especially in a rural area like yours. To compare prices "on foot" is often a waste of time - you run around for hours and spend $5 on fuel, to finally save $2 on the goods.
I know people who do this still. They study all the flyers for special offers, and then spend half the saturday to go from one supermarket to the next. At the end they have saved 3 bucks with luck. Or they have spend money on a "bargain" good, which else they wouldn't have bought at all.
I have all my food related shopping delivered to my house, after ordering via the internet, since about a year now. It doesn't cost much more than going to the supermarket myself. And I don't like supermarkets, plus I don't have a car, so delivery is really convenient.
I think this system will still grow in the future. Many people don't know about it yet, but once they try it, they will think twice about wasting their time pushing shopping trolleys again. And also, its more environmental friendly and efficient, than thousands of people driving around in their cars. And it creates jobs, too.