Ebay offers  Sun Joe iON+ 24V Cordless String Trimmer Kit for $102 (reg $159) after code with free shipping.

Apply Code: MEMDAY15OFF

Product Description:
GOT GRASS? Trim up the lawn and edge your walkways, flower beds, and gardens with the 24V Cordless String Trimmer + Edger from Sun Joe®. Powered by the exclusive 24V iON+ System, the included 4.0 Ah lithium-ion battery provides rechargeable runtime; and the included iON+ charger powers up the battery in under 2 hours! Cut the grass in those hard-to-reach places a mower just can't go with the 12" max cutting width. The included auto-feed spool easily slices through thick thatch and woody grass, for a perfectly groomed lawn every time. Need an edger? Sun Joe's got you covered! This 2-in-1 tool quickly converts from a trimmer to an edger with the press of a button. Perfectly shape up your plant beds with the 45º multi-angle rotating head, and the included guide wheel — which reduces arm strain and maximizes precision. Plus, the onboard flower guard protects against accidental trimmer contact to protect delicate plants and shrubs. So, when the grass is overgrown: Go With Joe®. The 24V Cordless Trimmer + Edger from Sun Joe. GET EQUIPPED®. 
Features

• iON+ 24-Volt System — Includes 4.0 Ah lithium-ion Battery + Charger
• Ideal for trimming grass and edging along flowerbeds
• 2 tools in 1 —Twist-N-Groom 180º rotating head converts from trimmer to edger in seconds
• 0º - 45º multi-angle head for maximum user control
• Auto-feed spool cuts a 12" swath with every pass. (Compatible replacement spool: 24V-ST14-SPOOL)
• Lightweight at only 13 lbs for easy maneuverability
• Adjustable handle and telescopic pole for maximum comfort and control
• Flower guard protects against accidental blade contact with delicate plants