Thumb Score: +94 MyProtein [myprotein.com] is offering 2 5.5 lb bags of Impact Whey Protein for $53.99 using promo code SLICK55. However, I've found you can mix and match with 2 x of 5.5lb, 11lb, and 2.2 lb as long as you have the 2 x 5.5 lb protein to fulfill the promo code.