We don't take any of those methods, unfortunately - we could do a wire transfer but it would have to be in USD, or if you can set up a PayPal account from your bank account that would work too. (definitely an area we're looking to improve on in general, but it's tough to do when we're legally incorporated in the US)
Pretty difficult to incorporate in China, as I understand it - perhaps we could work with a more China-friendly international bank, though, like HSBC; there has to be someone who could set up a domestic account for us and handle the paperwork for converting RMB etc.
I thought that if you have a bank account with China Bank (for example), you could do a wire transfer AND have them flip the money to US dollars before wiring it to a US bank account. Perhaps the bigger problem is for the person doing the purchase as I think they would need to wait a few days (certainly the case for moving money from the US to China...) for the money transfer to be finalized. And depending on your level of patience and need for instant gratification, that can be a problem.
radioman - hmm, didn't know that; I'll call up BofC here in New York next week and see if they can provide some details on how that would work. We'd certainly be happy to provide that option if we can.