Mitsubishi HC 9000D 3D projector. $13,500 when new.
This high-end home theatre projector was $13.5k when it was new in 2013. It's feature packed and better than most current projectors three times the asking price. It is an award-winning projector. It has a contrast ratio of 150,000 to 1, amongst other great features. I'm selling it because I bought it thinking it would work in my home theatre but I stupidly miscalculated the throw distance. Below is a spec sheet including the original price in $USD and a link to a glowing professional review,