Amazon offers Prime members the Crock-Pot Hook Up Double 1-Quart Connectable Entertaining System in Metallic Sage, model no. SCCPMD1, for $30.09 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $10.79.) That's the lowest total price we could find by $15. This unit plugs into other Hook Up Connectable Entertaining System units and features two 1-quart crocks, removable stoneware, and three heat settings.