Amazon offers Prime members the Lodge 6-Quart Cast Iron Camp Dutch Oven for $41.30 with free shipping. (Non-members can spend $49 to bag free shipping; otherwise, shipping costs $13.03.) That's the lowest total price we could find by $11. It measures 12" in diameter, 3.75" deep, and features a cast iron lid that can be flipped and used as a grilling surface.