$44.99*: WORX 20V 10" Cordless String Trimmer Edger w/ 2.0Ah Battery & Charger at Amazon

Amazon [amazon.com] has WORX 20V 10" Cordless String Trimmer Edger w/ 2.0Ah Battery & Charger for $49.99.
Shipping is free.

[2-IN-1] Don't buy a separate string trimmer and edger lawn tool. Get this 2-in-1 and save time, money, and space in the garage
[ROTATING HEAD] It easily switches between grass trimmer and lawn edger: just grasp the head, pull is away from the shaft and turn it 180
[SIMPLE AND EFFICIENT] At only 4.2 lbs (3.2 lbs without the battery) this lightweight and compact weed trimmer and grass edger is made for everyone
[AUTO-FEED LINE] Automatic line feed when starting up, simple and easy to use without extra operations.
[FLOWER GUARD] The adjustable spacer guard of lawn trimmer prevents accidental trimming of plants, lawn decorations, and other sensitive areas of your yard
[INCLUDES] 20V String Trimmer Cordless & Edger, 20V MaxLithium Battery, Trimmer Spool, 20V Battery Charger, Safety Guard
[SAME BATTERY, EXPANDABLE POWER] The same battery powers over 75+ 20V, 40V, and 80V lifestyle, garden, and power tools in the Power Share family

$45