Well, it looks like peanut butter prices are headed upwards because of a smaller-than-usual crop this year. As I shopped this week, I was still able to find peanut butter for around $.10 an ounce - which is a pretty ordinary price. If you include peanut butter as part of your three-month supply, you might want to inventory your supplies and stock away a few extra now before the prices rise. Peanut butter is one product, though, that you don't want to get too much of. Because oil is a significant component, the peanut butter will go rancid just like oil. From my experience, it will store well for 9 months to 1 year depending upon it's manufacture date and storage condition. It is best stored in a dark, cool area.
For more information: http://www.chicagotribune.com/business/breaking/chi-peanut-butter-prices-skyrocketing-20111101,0,1645306.story