I bought some stuff from US ebay recently, seller cant provide proof he sent, they are long over-due, seller offered a refund, then changed his mind, its with paypal who want me to wait 4 weeks before deciding wether they will re-imburse me.
OK paypal suck and blow, but at least I have some chance of eventually recovering my money with them. My bank said it would be quicker to recover the funds via paypal, it would be a longer process my bank doing a charge-back.
In my opinion ebay is very dodgy, and paypal are a law to themselves.