Costco Sale – Instant Pot Accessory Kit by Rhonda February 4, 2021 *UPDATE* 7/15/20. This is compatible with 6-quart and 8-quart cookers. Select Costco locations have the Instant Pot Accessory Kit 8-Piece on sale for $19.99 (after instant savings), now through July 17, … 0 FacebookTwitterPinterestEmail