I guess I could have read the box and noted that there were 15 of these unfulfilling snack cakes inside, but I just guestimated that 100 calories would be about three times larger, with maybe 6 cakes in the box. I'm also a little worried about how many calories are in the regular-size May West cake as I tend to eat them by the box-load when I can find them. That explains the more-rapid-than-usual weight gain over the past few weeks. Shame on my unborn child for craving edible oil products so badly!!!!!