Amazon.com has this 20-Pack of 10-oz Slim-Fast 3-2-1 Ready To Drink Shakes in Rich Chocolate Royale or Creamy Milk Chocolate for $19.70 when you order via Subscribe & Save and click on the $4 Off Coupon on the product page. Shipping is free. Be sure to cancel Subscribe & Save after you receive your order.

Regular Price: $24.95

BUY NOW: $19.70 Free Shipping at Amazon