Do you mean like a price notebook? There has been several threads on this topic in the recent past. But one thing I did learn from the past discussions was about using Splash Shopper software for your PDA. Now I go paperless grocery shopping! I never forget to get anything, I know exactly how much stuff costs (and can change easily in my PDA), then go home and sync to my computer and I’m done! The $30 for the purchase is well worth it!