Look what happened to the price (different in my eyes from value) of milsurp guns from WWII.
It started with the 50th anniversary, and got a big boost from "Saving Private Ryan", and "Band of Brothers", etc.
A GI 1911A1 that was a $30 gun in the late 50s was a $300 gun in the 80s but became an $800 gun 20 years later, and today they are what, $1100? $1500??
Dirty Harry turned the M29 & .44 Mag into a mainstream demand, and at one time the price for a gun "in hand" was near double the MSRP.
its about demand. Popular movies and TV shows DO have an impact on the demand. When the next big cinema hero uses a unique gun (something other than a "BLock") particularly a rare gun, demand soars, and prices jump.
The Auto Mag was out of production, and had crept up to about $1000 before Dirty Harry used one in Sudden Impact (and that gun was custom built for the movie). Almost overnight (meaning within a few weeks/months) after that movie, the price jumped from $1000 to $1500, for the few guns you could find for sale. No change to anything except the demand, and the price.
Its all about what the buying public wants, today. Tomorrow, could be much different.