Probably around $2,000 for the features mentioned there. But I had a similar idea, and I know there's many, many more features that could be added to that -- so I think, unless you go for someone such as Andres above, then you'd need to be sure your budget would cover all costs.

P.S: I may have a design already if you need one It's not that bad at all. Cost me quite a bit though -- probably wouldn't let it go for less than $200.

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The man who comes back through the Door in the Wall will never be quite the same as the man who went out.