The 100 calorie packaging scheme is everywhere these days. I understand that this is convenient and it helps with portion control, but its a rip off! The cost per ounce of food product is easily doubled by buying the portion controlled packages. I never buy these, it is so much cheaper to buy a bag, box, or jar of an item and use my food scale to measure out the proper portion controlled serving and store in baggies or some kind of appropriate container. For example, I recently had a coupon for chex mix. I usually make this but when it went on sale for .99 cents a bag I used my coupon and got a bag for .49 cents. I measured out seven 30 gram servings out of that one .49 cent bag of chex mix. When I was at the store last week I noticed that the 100 calorie packages of the chex mix sell for 2 for $4 on "sale" for 5 individual serving bags. That is a 400% price markup just in price alone. I should also mention that you actually get more ounces in the big bag than the individual 100 calorie bags. Even with coupons and sales you can not overcome that big of a price difference.
So, take a little time and measure out individual servings and make your own 100 calorie packages.