thenammagazine
Super Freak
I understand that you might be upset that the guy shipped by UPS instead of USPS but he probably paid more and used a safer courrier.
You should cut him some slack.
Wait for the parcel to arrive and see if UPS make you pay.
Even if you do i doubt it would be that expensive...
About the fact that he has the right or not to do so well since he's upgrading the service i think it's fine with ebay.
It's usually downgrading and paying less for shipping that is a problem.