Ballpark price for an in home IMAX theater?

So the question came to me "What would you buy if you have X million/billion dollars and could not invest it OR use it for charity?"

Everyone gets the question (or some variation) in their live.

My price limit was 10 billion. So I basically created a home/zoo/museum for under privileged schools to go to on field trips (the living area separate from the rest). Blah blah blah. Anyway there would be two IMAX theaters, one as part of the museum (basic normal IMAX with ample seating.

The second would be a personal theater with a grouping of about 10-15 luxury seats, a table, and drink dispensers and a remote control. This would have the 76x97ft IMAX screen (with IMAX quality).

The hypothetical has passed, but I was curious about how far 10 billion would get me on the idea so I started to compile a list and started taking this "seriously". No, I do not have anything better to do with my time. Yes, I do have a lot of spare time.

So I was wondering if anyone knew how much an in home IMAX theater would be. I tried to find it online but I could not. So I bring this to you, the users of Yahoo!Answers.

PS: I had no clue which topic to post this under, so I picked this one as a best gues.

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