A person can build one heck of a printer, with a LOT more bells and whistles than that for $6k. The nozzle sizes are no big deal, pretty standard, the frame/body is nice, looks like it should stand up to high temperatures. The temp numbers they state suggest it will print polycarbonate, but they are not selling any polycarb on their site, so I don't know about that. It is a LOT of money for something that simply has a large build volume with a box over it.

A person can buy/build a large build volume 3D printer, capable of printing polycarb, put an envelope over it, and still be just over $2k.