I agreed with you that there are risks for seller, but a fair play is necessary for both sides.
As for my case, after considering the possible charges from paypal, I asked the buyer to pay me HK dollar instead. And maybe due to the fact that my a/c is only a personal a/c and the buyer is paying with his balance, no charge is levied on me and I have successfully withdrawn the money to bank in HK. Also no charge is levied on me by the bank.