This came on my 2012 WRX, and I replaced it with a Duracon knob after a couple of months.
It is pretty heavy, made from a block of aluminum and then leather wrapped. Not sure of the actual weight, but I can get specs if you want. In good condition, actual pic of the knob is now posted below.
Asking for $100 shipped to CONUS or best reasonable offer. PayPal only unless local (cash).