That is something that has always mystified me, why a lock from Lyman, TC, etc. on eBay will be listed for much more than one from Siler or L&R. I've seen some sellers asking half the price of a new TC or Lyman Rifle just for a used lock from one of the same models. I have a brand new Lyman GPR flintlock I changed out, guess I should put it on the market, picked up some very good RPL model L&R locks off eBay for a steal, got three of them, built for different rifles, but they will work great for my no name builds.