If i had to guess 12-15k as panasonic slashed the price to 50k for a brand new one (and there is some company on ebay selling 4 brand new ones for 33k) which probably means a new one is coming out fairly soon.

Not sure of access to the theater but if its down in a basement and access is difficult i could see it costing just as much in wall removal, trim & door removal etc and then the cost of replacing all of the stuff removed just to get the thing out. Not to mention the cost of the crew you would need to bring in to get that sucker out and then of course the logistics of crating it properly as minimize shipping damage.

Thats a tough one im glad im not in your shoes! Offer it "Free" to anyone who comes and gets it? ;)