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Amazon offers its Prime members the Optimum Nutrition Essential Amino Energy 9.6-oz. Jar in Concord Grape (pictured) or Fruit Fusion for $19.75. Click "Clip this coupon" to cut it to $16.75. With free shipping, that's the lowest total price we could find by $6, although we saw it for $2 less in September. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.43.) Each tub contains approximately 30 servings.