Next to nothing? I wouldn't be so sure! McCauley doesn't have a stamping die for this prop any more! Those that are left is all there is, or likely will ever be! True, there is a recuring AD on them, but it doesn't take long to accomplish, and keeping this prop (or replacing a bad one with another gull-wing Mac) is preferable to the cost of reconfiguring to a NEW prop, spacer, and spinner for some owners! Dingbat's performance with this prop is definately above average!