Staub 7-quart Round Enameled Cast Iron Cocotte | Costco
Lodge 6 QT Enameled Dutch oven - Costco97.com
Tramontina Enameled Cast Iron Dutch Oven, 2-pack - Walmart.com
Costco Deal: 2 Pack Dutch Ovens! Fair warning, these are not "made in the USA" Tramontina, and they are good only up to 450F only, but might be a good starter set