You didn't answer his question.
A cheaper option would be the HTPC direction, which can be had in either built or premade. Decent pre-builts should have all the features of a normal 3D blu ray player including the Oppo, as well as working as a scaler. I would look into the HTPC section if you want to make a build. It's worth noting there are not many freeware software that works properly with blu rays, so take note. But you should be able to have a cheaper machine than the Lumagen Mini 3D.