KitchenAid 13-Cup Food Processor Attachment with Storage Case

I'm clearing out some kitchen gear and have this KitchenAid 13-cup food processor attachment. It's the matte silver model and comes with the storage case for the blades and discs. It's been used but is still in good shape. Just a heads up, this is the attachment version meant to work with a KitchenAid stand mixer, not a standalone unit.