We’ve got a local rag that cones out every week that is strictly for sale or trade, and local services ads. It’s what i use to sell most stuff. I list on CL and the Thrifty Nickel but most of my sales come from the print ads. I was on FB for a few months and sold a lot of stuff through the marketplace and a telecaster building group that had turned into a guitar/bass build group where selling was allowed. It was a good place to sell, but i only sold bass parts in the tele group and R/C hobby stuff in the marketplace. I tried a couple times with basses in the marketplace and had nothing but offers so low as to be laughable so I stuck to print and CL for complete basses. If you are willing to ship and have some high end stuff to off, you might want to check out the Nashville musical instruments buy sell trade group. There’s usually a decent amount of high end guitars basses and amps among the home recording stuff that seemed to dominate that group.