If you go with a top of the line Gamill and the statler stitcher and all the avaiable options you can be at about $32,000.00
I looked into getting one about 6 years ago , and then quickly figured out that I could send MANY MANY quilts out to pros... who already have the learning curve under their belt , and spend as much time quilting if not more than I do piecing.
If I won the lottery.. doubt I would get one as the cost to send it out to the pros would be a non-issue. But would I end up with a fabric store as my stash... probably.