Mostly agreed with jacob! But I use both ebay and facebook marketplace regularly. It really helps to have the workflow planned out ahead of time so you know where to go and when. As far as minimums go it's kind of flexible - local pickups can be free, but for shipped goods I guess it's around $15-20 (excl. shipping)
ebay has great reach. I only ship stuff with it, no pickups, and I like to use it for more niche items and for clothing. I scavenge cardboard boxes from my building's recycling room and buy the shipping label directly through ebay. Then when it sells I walk it 5 min to the local post office. I never do auctions either, just set the price to what I'd like to get but accept offers as low as <some number I'm still happy with>.
I have a different experience from jacob for local pickups, but only since I've figured out my system in the last couple years. fb marketplace is great! I list items at a low-ish price so they sell quickly. In exchange, I make it clear in my description that I'm looking for someone to reply with a date/time when they could come pick up (and if they read that far then they're probably not gonna ask me a bunch of followup questions about stuff I already wrote in the description).
Anyone who's ever sold anything on facebook [in a city] knows how soulsucking it is to get 100 of the default "Hello, is this still available?" messages. so even though I have my silly tests and rules about who to respond to, it makes for a very efficient process and I think people like that. at least, I like it and I can't be bothered to respond to everybody. I seem to sell things and get good ratings this way - and the nice part about ignoring 95% of responses is that they can't leave a rating
