I can provide at least one reference on this board. If anyone is concerned about my low post count on Sturm, I also use the same handle on AR15.com, Falfiles, and ebay and have been a member of those sites with feedback for many years. Thanks.
It really depends on what the gun is and what comes with it. I'm willing to pay more for a numbers matching gun with accessories than a non-numbers matching gun with no accessories. If you have one, send me a pm with details. Thanks