I bought this
nice endpin to fix my old one and it turns out I only needed the steel rod.
So, if you are in need of just the socket part (the ebony, brass and screw part in the photo), you can get it for $80. It is unused and hasn't even been installed.
It takes a 10mm rod. The narrow part of the cone is 29mm, the wide end is 33mm and the cone part that goes in the bass is 55mm long. The cone is the standard 1:17 taper