Soylent offers its Soylent Powder 15.8-oz. 2 Pack in Cacao or Cafe Mocha for $24.70 via Subscribe & Save. Coupon code "2PACKPOWDER" cuts that price to $21. With free shipping, that's the lowest price we could find by $13. It contains 20g of protein and 26 vitamins and minerals per serving.

Note: Be sure to cancel Subscribe & Save after your item arrives to avoid being billed for future shipments.