On Amazon where you can now get this
Zinus King Size 14-inch Metal Platform Bed Frame for only $75.99 shipped (regularly $119)!

This platform bed has a sleek and stylish design with an ultra-durable metal structure and over a foot of under-bed clearance space for storing items. The platform design utilizes wood slats so you don’t need to use a boxspring with your mattress! Even better, it includes a 5-year worry-free guarantee!