I found this on Meal Planner on WDW Planner Website: http://www.wdwplanner.com/index.htm
I used it, and it was interesting to see about how much money you will need for food alone, if you plan on going to these resturants. You type in the dates you will be in Disney and then it will give you a list. Breakfast, Lunch, Snack and Dinner. You just click on where you think you will be eating and it estimates the price for you and it will also give you the day you should call for your PS seating.