[markem]

Turning a closet in to a walk in is difficult and expensive. You need to be able to make it essentially air tight and humidity tight. That means that you will probably need to redo the walls, ceiling and floor and probably have a custom door installed and then add the spanish cedar. You will also need to run power (a separate breaker is recommended) for fans, active humidity and such.

and you can't take it with you when you move.

A closet walk in would probably hold more. But you lose the closet and it will likely cost more than the custom humidor. At least that was my analysis 2 years ago when I went with the Aristocrat.