 Re: Facebook Marketplace
It can be very aggravating, from an exposure point of view. I've had popular items get 0 views (because they aren't showing them to people), and less popular items get 100s of views the first day and tons of interest.
Also, local competitors will flag your items to get them taken down. Then you have to meet people in person.. yuck!
Depending what you sell, I wouldn't really mess with it. Unless you have a business location and they can come to you. OR, give them all your tax/bank info and offer shipping. (I'm not giving facebook that shiit)
The good thing, of course, about selling local is zero fees/tax, and it's cash, and you never have to see them again... so no returns.  | 
