I think you'll have a hard time finding anywhere that will take money orders. There has been a surge of money order frauds recently, so even those that take them are holding them until they completely clear (check out the sellers on eBay, for example).
That being said, have you tried contacting the sites listed in the FAQ? That's the first thing I'd do, if I were you. Those are the sites we're going to recommend either way. You can find the FAQ
here, which is probably a better place to post non-picking questions anyway.