Where can you find free used gun values online?
You can pay for a subscription to the Blue Book Of Gun Values
online and they can be reached at bluebookinc.com.
Alternatively, you can visit some of the online firearms
auctions/classifieds like FirearmsLocator.com, Gunbroker.com or
AuctionArms.com and see what similar guns are being offered/selling
for.
Or you can go to www.firearmspriceguide.com, the FREE online
price guide to firearms.