Have you ever used Facebook Marketplace to sell or buy something?

Yes but for a specific location and only 1 time. Very reliable. Sold my inverter power system. 12 years back. I think it is location specific.

My room mate sold a couple cars on it. Of course both times the buyers were we*rdos.

One guy responded with "I will give you $3,000 for it right now" and of course the PFP was pimp daddy HitTheBong, mouth gaped open with smoke rolling out. I said, "Yeah I wouldn't do business with that guy over a pack of gum."

Just if you can meet in a safe spot for a cash transaction, otherwise no. Treat it like craigslist.

Yes. I worked fine for me.

I sold a bass amplifier there once. Worked okay.

You can run really good campaigns easily on both FB and insta with single account.

I'm afraid of ending up on the ID Channel.

Make you agree to meet and either can pay in cash depending how the minimum amount is, message them first to make sure they are reliable

It's pretty solid