These Martha Stewart Collection Collector's Enameled Cast Iron 6qt Round Casseroles drop from $179 to $49.99 at Macys.com. Plus, shipping is free. This is one of the lowest prices they offer on it each year, and the best deal we found on a similar cast iron casserole in this size. It comes in 10 colors (select the color you want to make sure it's still in stock). Sales tax is charged in most states.