The fighter jet seat, above, comes from an F-4, while there’s also a B-52 model that, as you might guess, comes from the bomber.  Ergonomically they lack a few of the accepted niceties – such as usable arm-rests – but Motoart do also offer a C-130 Navigator’s chair which is a whole lot more adjustable.

Perhaps unsurprisingly, prices for the chairs are by-application only, and given Motoart say they’re all limited-edition you’re probably looking at something in excess of a Herman-Miller Aeron.  The company also makes aeronautical desks and other furniture.