There's also Gunbroker, GunsAmerica, and GunsInternational. Plenty of reputable sellers on all three platforms. Avoid Armslist like the plague.
You might see if a local gun shop will sell for you on commission. Some do and you might ask if they can add yours to their lineup at a show. It's also worth checking out the clientele at your next gun show and what's being sold. If it's all polymer and aluminium and nylon, probably best to try either a commission or sell yourself online or wait until another show rolls around. If there's a lot of wood and blued steel and vintage stuff in there too, go for it.
As for not being "hunting" guns, I think some members of this site might differ in opinion. People still go hunting with replica Sharps rifles, rolling blocks, Winchester 1912s, vintage arms of all sorts. Just depends on what you're hunting and where. Plus some folks just always look out for something shiny whether it's for hunting or not. If you wanna try putting them up for sale on here, I don't think you'd have a problem finding new homes for your guns.