Walmart offers the Stalwart 25-piece 4.8-Volt Cordless Screwdriver for $13.97. (Amazon charges the same for Prime members.) Opt for in-store pickup to dodge to the $5.99 shipping charge. That's the lowest price we could find by $10 and the best price we've seen. It features 24 screwdriver and drill bits and 180 RPM non-load speed.