Kmart offers the Craftsman 4-volt Cordless Screwdriver for $19.99. Plus, Shop Your Way Rewards members receive around $9.99 in SYWR Credit. (Not a member? It's free to join.) Op for in-store pickup to dodge the $4.49 shipping fee. Assuming you'll use the credit, that's a savings of $10. It features a rechargeable lithium-ion battery. Deal ends April 29.