One Gallon of Kroger Milk for $1.74! ($.75 Checkout 51 Rebate) Posted by Harbor Master on 7 September 2017, 9:38 am Tweet Expired Kroger has Gallons of Kroger Brand Milk on sale for $2.49 through 09/12. Buy One Gallon for $2.49 and then submit for $.75 Cash Back from Checkout 51. Final price $1.74 Submit for $.75 Cash back from Checkout 51 when you purchase One Gallon of Kroger Milk