Well, I know this isn't a popular view in today's world where everyone ships everything, but packaging things up and shipping them out is indeed a hassle and takes more time than most people admit, and nobody is willing to pay for that time. Not to mention, packaging up something as long as a Mosin and making sure it arrives undamaged is no trivial task. But the real issue more than those is payment, as I do not use paypal or any other forms of electronic payment, and nobody is going to mail cash, so that makes it pickup in person only.
I'm still flabbergasted that with more than half a million people in the Reno metro area that nobody seems to want it for $100.