If your guns don't move at a show, you are out your table costs and time, and gas if not local.
If your guns don't sell on Ingo or gunbroker, you are out maybe 5min per gun listed.
Exactly this. I'd rather risk the effort than my money. Dealing with GB sort of sucks (it's the shipping I don't like). Armslist can be straight up scary (I've yet to have a bad experience but I've heard some bad things from others). Selling/buying on INGO has always been a very, very good experience. I've met a few who I now consider friends.