When I sell guns and gun related stuff I take into account:
-what I paid for it (out the door)
-MSRP
-how much I invested in parts or whatever
-the condition
-how much i shot it
I glance at gunbroker and true gun value to give me an idea.
I haven’t sold an off roster gun but have sold rifles and am currently selling 2 here in CAguns.
A sig MPX PCC carbine and Kalashnikov kp9.
The kp9 is going for about $1,000 but I’m selling mine for $1,600 because of all the extra parts and mags and the very low round count.
The MPX is going for about $1,800 and I’m selling it at $2,000.
Of course I bump it above what I would pay because I know it’s going to go into negotiations. So I start high to end up where I want to be. Also always open to trades and I would trade anything (bows, guns, gold, silver, watches, etc) as long as it’s of comparable value.
Finally, I always provide links, where the PPT will take place (and link) and most importantly, the reason why I’m selling it.