It's also the only bit of Facebook that hasn't turned into an endless stream of trash. I expect that not to last either, if you're looking for an idea then a localised marketplace alternative with social proof should be on your radar.
For a long time they were heavily promoting "Ships to You" non-local goods. Annoying. Lots of dropshipper type stuff rather than a local unique items. Marketplace seems to have backed off that in the last year(s) though, my feed seems very local, one-off, and "real.
It still has a lot of trash, but 90% of it is trash you experience as a seller. Scammers are still really common, and I doubt the moderation has gotten much better since I failed to sell an empty aquarium because they couldn't be convinced it didn't have fish in it (although based on everything else on Facebook, there probably is just no moderation now).
