Quoted from benheck:
I have my seller preferences set as US only, no returns, and a few other things to avoid scammers.
That way those conditions are baked into everything you sell and eBay takes your side if a buyer violates them.
EBay is great for finding vintage NOS ICs and things like that. I have a new design Commodore 64 PSU en route, could have ordered direct from the guy but eBay gives me a bit more confidence.
I have a magnolia odyssey 2 and games I need to list. I may go FB or eBay with it.