I wrote here about comparison grocery shopping.
Goal: Figure out if comparing prices and using more than one grocery store is worth the trouble.
Last weekend I tried it for the first time, including flipping through two ad flyers for the two respective stores. The Magician made the list BEFORE I planned the route so we only bought what we needed and not what was on sale. We had a small list this week and ended up saving $5.61. Not much. But times 52 weeks in a year, that would save almost $300.
Here's an image of the comparison list, in case you are curious.
How long does it take? Maybe ten minutes, not counting compiling the list.