Walmart offers the Crock-Pot 20-oz. Lunch Crock Warmer in Blue, Gray, or Red, model no. SCCPLC200, for $15.99. (Amazon charges the same for Prime members.) Opt for Ship-to-Store pickup to dodge the $4.97 shipping fee. That's the lowest total price we could find in any color by $4, although we saw it for a buck less in March. It features a carrying handle, detachable warming base, and a 20-oz. capacity.