The pitch: Built-in portion control takes the guesswork and the temptation out of snack time.
The truth: You can get an ordinary box or bag of your favorite 4 p.m. nosh and small sandwich bags and make your own. Compare: You can get a 4-ounce box of 100-calorie snack cakes for about $4. Or, you could buy a roughly 10.5-ounce box for about the same price and divide it up yourself.
The exception: Binge eaters, listen up. If you literally can’t stop yourself from eating the whole box or bag, pricey snacks are still cheaper than the health problems caused by overeating.