I mostly stay away from shipping because I don't want to deal with the hassle. I will only ever buy using paypal with buyer's protection, but I'll never sell with it. Might be hypocritical, but I know I'm not going to screw someone over. Conversely, I have been screwed over on a fairly pricey part (3550 transmission). The guy said that the clutch was done & synchros were bad when neither were true. Ended up refunding him like $400-$500, because the only other option paypal gave me was that he'd send it back and get a full refund. BS! I'm not taking back a transmission that some jack-hole tore up and blamed on me. Sounded like he improperly adjusted the clutch, it wasn't fully disengaging, and then he tore up the synchros. I suppose I could have fought it more, but I was TDY for 4 months at the time in and under the pressure of tons of homework and academics. I didn't have the fight in me. So, I settled.The trouble there is that shipping has gone sky too. I mean... You discover a nearly new FMS aluminum driveshaft lying around and pretty much stuck with [local pickup] if it's made out of the kinds of materials you [want] in your parts. lol
So, mostly, I don't ship anymore, but if I do, they have to pay me without any recourse and take their chances. That said, paypal buyer's protection really does a good job and bailed me out at least twice, last year, when one guy didn't bother to send the MSD Digital 6+, and the next guy sent a bad one. I'm leaning towards just going only with new electronic stuff in the future, wherever possible.