I knew a gal who was so proud of how much money she saved when doing her grocery shopping that I don't think she realized that she was negating her savings by driving around.
For example for her family of 5 she'd crow that she spent about 100 at the grocery store what with watching sales and stacking coupons, then she'd drive over to Alco which was not right next door to the market. Then if she heard that one store had a good deal on fruit but the other had a good deal on meat, she'd go from one to the next.
As she was lecturing me about the value of coupons and stacking (which I'll be honest, I still don't understand) and how much it can save you, I was thinking that I hoped those savings was going towards gas.
I use coupons too which helps to save indeed, especially when there's a sale on the items as well, but I don't drive around to get the deals. The only time I'll get groceries anywhere but Martin's is when I want a corned beef brisket because except for St. Patrick's Day sales, they're usually cheaper at Walmart.
And I'll admit I can be a cheapskate as well. Or rather a recovering cheapskate. Used to buy all clothes at Walmart and thrift stores. Or rather all my clothes. Boy clothes were bought at Target cause frankly, I like their selection better for boys clothes. A friend teased me constantly about being such a cheapskate and convinced me that it was actually less money spent to get a pair of pants or shoes for $30 than to be constantly replacing $10 shoes or pants.