Share Read on Mobile Enter Reading Mode Walmart: Mainstays Digital Alarm Clock With Keyboard Style Controls for $7.88 (Reg $12) + Store Pickup. Posted on February 10, 2021 by Balbina Valencia Home Deals Walmart SHOP HERE WALMART Limited time offer! This price may change at any time! Head over to Walmart right now to pick up this Mainstays Digital Alarm Clock for only $7.99 (regularly $12 )! That’s an amazing savings of $3.