I've bought from international sellers twice. It didn't slow down the process at all. Those owners also have a reasonable expectation of getting "market price" and I don't know why you seem to assume that they will take less because they are not located in the US? If you are looking for a deal, do your homework and look for a price within your parameters and make an offer - they will either accept or decline (I have outright declined ridiculous offers) or counter offer. Good luck.