The bought new price difference is huge. I asked Martin what it would cost to spec my Sei Jazz now. He said in the region of £3000 +. A Sadowsky NYC is in the region of £6000 +.. Martin makes basses as good a bass as Roger imo,  if not better being hand made by himself .   So what gives. What is the difference. ? Is it the name Sadowsky.? Just interested in thoughts.