All kinds of people use eBay so how do you protect yourself against fraud? I saw a listing where the seller said he records all serial numbers; apparently he was ripped off once.
For example, suppose you list a phono cartridge like a perfect MMC-1. The buyer might have a defective cartridge on hand and once he receives the good one, ask for a refund substituting his junk, in which case you might be S.O.L.
Would you send it through a 3rd party such as Sound-Smith, assuming they would even do such a thing, or what?