Blades for GE electric knives can be found on eBay and range from about $2 for single blades to about $30 for blades in a wall-mount case as of August 2014. WalMart, Amazon, Sears and other major retailers do not list GE electric knives as a currently available product.
Electric knife brands available on Amazon include Cuisinart, Black & Decker, Hamilton Beach and Oster. They range in price from about $13.50 to about $50 as of August 2014.
Electric knives are used to slice food through the action of two serrated blades, which are held together with clips and inserted into an electric base. Using an electric knife requires less physical work than using a regular knife. The devices are typically used for large and time-consuming slicing tasks such as carving a turkey, a ham or a roast.