Ebay offers Ego Power+ 8In Edger Attachment Refurbished for $105.49 (reg. $129) with free shipping. 

Product Description:
Add the EGO Edger attachment to your EGO POWER+ Multi-Head system for convenient and efficient edging. Create and maintain clean and precise edges around your driveway, sidewalks and patio with ease using EGO's 8'' edger attachment. Reconditioned product. Exclusively compatible with EGO POWER+ Power Head (PH1400) Sold Separately. 8” edger blade Water-resistant construction (ipx4)