Crock-Pot SCCPCCM350-BW 3.5-Quart Casserole Crock Slow Cooker for $27.99.  Shipping is free on orders over $35.  If needed, use this Filler Tool to pad the order for free shipping.  Here is a screenshot for reference. It features low, high and warm settings, and an oven-safe removable stoneware.  Most places have it for about $31.