I recently did the "free $5 prime pantry" credit for slower shipping just so I could look around and snag a decent discount. I stacked that with the "free shipping when you buy four items from this list" promotion they're doing and managed to buy 48 Orange Powerade for $10.32. That brings them down to 21.5 cents a piece.
All it takes is adding four of these to your cart, then applying your free $5 Prime Pantry credit and the price comes down to $10.32 with free shipping. YMMV since you need to already have a $5 Pantry Credit.
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