Price on metal frame deer stand

Looking to buy or build a metal framed box blind. What would y'all say is a reasonable price for a 4x6 metal framed stand with smart siding for the outside?
Also for those of y'all who have built some in the past what is a round about price of building one myself?

There is a guy in the market place here that builds such stands.

This is the start of the one I'm building