See if a gun shop or gunsmith in your locale will let you look at their Blue Book of Gun Values. Other than that, all you can really do is look around and compare prices.
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Agree. You might also check the prices for completed auctions at sites such as gunbroker, gunauction, or gunsamerica.
Any place that sells firearms.
Check the auction sites, on line gun stores, etc..
The library may have a copy of Gun Traders Guide, or the Blue Book of Gun Values, but it will likely be out of date. A more current means of establishing worth of everyday guns may be to check the on line gun auction sites, such as gunbroker, auctionarms, and gunsamerica. Search for the make and model of your gun, and specify CLOSED auctions. Look at the prices they actually sold for, not the high reserves with no bids.
Blue Book of Gun Values, you can look for comparables on Gun Broker, Auction Arms, Guns America..
Gun Trader's Guide book.
On line auction sites, Blue Book of Gun Values, Shotgun News, Standard Catalog of Firearms, gun shops, gun shows.
Check the auction sites, visit local gun/sporting goods stores and check prices, subscribe to Gun List or Shotgun News.
Check the classifieds and auction sites. The Blue Book of gun values might also be helpful.
We need to know which gun. Prices vary.
They already have.
Any of the on line auction sites.
New or used? Check your local gun retailer for current prices.