Does any company produce or market a BOX to bake boston cream cake?

does any know of a bakery that makes %26amp; ships a ';true'; boston cream cake?Does any company produce or market a BOX to bake boston cream cake?
Here's a site where you can buy one %26amp; have it shipped:





http://www.greggsusa.com/desserts/pies/b鈥?/a>





This is the only kit I could find:





http://www.kingarthurflour.com/shop/land鈥?/a>