The most expensive modern production sofa ever sold at auction is the legendary Lockheed Lounge designed by Marc Newson, which fetched an astonishing $3.3 million, setting a world record for a piece of work by a living designer. Other ultra-luxury consumer couches include historical antique items like the Clive of India Sofa valued at over $7.8 million, and ultra-exclusive commercial retail pieces like the diamond-encrusted PlumeBlanche sofa priced at around $184,000 due to its platinum detailing and limited production run.