Might talk to a local shop about consignment selling. They'll take a rip on the sales, but usually a shop can drive a higher price and a faster sale than private sellers, so I've generally experienced that I can get as much in my pocket selling on consignment and paying their "commission" as if I would have sold it outright via private transfer. I don't do that often, but when I'm too lazy to market something myself, it works.

Definitely need to go peruse a Big Book of Gun Values and research comps on gunbroker, gunsamerica, and armslist before you decide what they're worth and how to sell them. Auctions usually work themselves out for price if you set too low of number on an item, thinking it's old and low value when it's actually semi-collectible or desirable, but that's not always the case.

Armslist might not be a bad solution. It lets you set price as well as negotiate with buyers, and you can sell locally if you don't want to worry about shipping.