Knowing what it costs

I'm 40 this year, I left home at 17 so have been grocery shopping for a good few years now. This is the first time though I have kept a record of every single penny I've spent. If you asked me last year what a loaf of bread cost etc. I would have guessed. As I'm now recording everything on a spread sheet I'm very aware of prices, I know when they go up & down, offers are on etc. Today this saved me money. I took some things to a charity shop & parked in Lidl's car park, somewhere I have only shopped once or twice before. One the way back to the car I walked through the shop checking prices. Some things were the same but those that were cheaper I bought. I didn't need much, I made sure I just bought what was genuinely needed but it was good to know just what savings I could make. I'm sure many people know the prices of the things they buy but for me this is new & I'm reaping the rewards.