Amazon offers the EAS 100% Whey Protein Powder 5-lb. Tub in Chocolate for $29.89 with free shipping via the steps below. (Vanilla is available for a few bucks more via the same directions.) That's $18 under the lowest total price we could find for 4-lbs elsewhere and the best per-pound price we've seen. To get this deal:
  1. View the EAS 100% Whey Protein Powder 5-lb. Tub in Chocolate for $45.99
  2. clip the 30% off coupon on the product page
  3. order via Subscribe & Save for a final price of $29.89 with free shipping
Be sure to cancel Subscribe & Save after your order ships to avoid being billed for subsequent shipments.