Publix has the Muscle Milk single bottles (25 g of protein) on sale for 2 for $5. There is also a $3 off 4 digital coupon at Publix. Add the $.75 rebate in Ibotta and it becomes a great deal: $10 for 4 - $3 on 4 dc - $3 total for 4 Ibotta rebate = $4 or $1 a piece.
They also have the 4 pks on sale for $5.99. The Ibotta rebate is $2.00 on the 4pk, so you can get the 4 pk for $3.99 or $1 a piece.
Either way you like to buy them, you can get them for about $1.00 a piece. Or buy them BOTH.