It's not too much more than a video card, a DAC, and a 1000 watt bulb with fancy focus.... My company has 1 in each office, about 5K units and I borrow one every year for the MSBA show. I've thought of using one for the SuperBowl & might do it next year
Decent ones run $2500 each - high end ones have come way down but they can still run 5-10K