I use a spreadsheet to plan out my trip with a list for each location which includes the price per item. One of the big benefits of doing this is that I am not tempted to buy that door buster deal that I didn't need when I was planning out my list and definitely don't need now that I am in the store. Some additional benefits:
- I know exactly how much I am going to spend before I leave the house (at an insanely early hour).
- I prioritize locations for the best deals.
- I usually finish all of my holiday shopping.