10pk Think Protein Marshmallow Bars $10

Pick up a 10-Count Pack of Think Protein Marshmallow Crunch Crispy Squares, regularly $19.99, for $9.07 at Woot. That works out to $0.91 per bar, and most name-brand protein bars rarely dip below $1.50 each. These gluten-free bars contain 15 grams of protein and only three grams of sugar. Shipping is free when you log into your Prime account, or it adds $6 otherwise.