I'm not sure I would want someone in another country to know my PP account info. They could easily send you a phishing email and if you fall for it, there goes your money.
I know it is wrong of me to mistrust people from other countries more so than the US, but there are places in Eastern Europe where much of the economy is built on internet scams.
But since another QB member has vouched for this seller, there seems like there would be no problem.