There is only one deal each day as per the top of the page: today's is 2lb Pure Protein for $18.89 + shipping if you don't have Amazon Prime. OR you can just go walmart for $19.88 link.

Pretty sure this Pure Protein is the only one on sale; they just list the Optimum Nutrition Gold Standard as one of the "best selling".

On top of page: "shop one deal every day..."

They're just trying to be tricky sneaky for unsuspecting buyers.