Ebay offers Refurbished KitchenAid Fresh Prep Slicer/Shredder Attachment for $29.99 (reg $40) with free shipping.

Product Description:
Easily add freshly sliced or shredded ingredients to all of your favorite salads, entrees, sides and more. Simply attach the KitchenAid® Fresh Prep Slicer/Shredder Attachment to the power hub of your KitchenAid® Stand Mixer, and let it quickly power through the ingredient of your choice.