I wrote before that I was setting up a price book. I have a really good memory, and I've found if I take the time to write things down (longhand, not typing) it sticks in my memory even better. So now I do look through my price book, mostly when I'm at the computer going through the online ads. But being able to remember the best prices really helps in the store. If I see a good bargain, I know it's a good bargain. Plus, I do a lot more of thinking 'nope, not a good deal although it looks like one'.
So, I am getting better at buying frugally. Plus using the library as a place to get DVD's has worked out great.