I have always had good experiences when I’ve spoken to the buyer and met in person. The poor experiences on any sales platform have been when I have either sent or been sent an instrument, amp or part. Given the pressure couriers are under, I’m just it prepared to risk sending an instrument anymore.
I don’t know which platform earns you the most per item. I decide what price I’ll accept and I’ll wait until I’m offered what it’s worth. I won’t use FB for personal reasons (I’m against the platform and while my protest is pointless, ensuring me or my children aren’t exposed to it is the best I can do) but I do use eBay.
Personally, I would prefer to sell here as it supports the community and I have never been ripped off or scammed and I’ve met some genuinely lovely people. This site has also been an invaluable resource that has helped me a lot, so cheers all!