Amazon has the Black & Decker PP360 Cordless 4-4/5-Volt Screwdriver with Rotating Drive for $20. Shipping is $6 or free with Prime or on orders of $25 or more.
Technical Details:
* 4.8-Volt cordless screwdriver with four-position rotating drive for optimal operation in a wide variety of positions and spaces
* Delivers a powerful 38-Inch/Pound of torque for thorough driving performance
* Compact body and ergonomic shape provide a comfortable, secure grip
* 1/4-Inch hex chuck quickly and conveniently accepts common bits and accessories
* Includes a double-ended hex-shank screwdriving bit and 2-year manufacturer's warranty
Amazon.com: Black & Decker PP360 Cordless 4-4/5-Volt Screwdriver with Rotating Drive: Home Improvement
Black & Decker PP360 Cordless 4.8v Screwdriver w/ Rotating Drive $20 (FSSS Eligible) 
