准备在BL上买个已经绝版的set，不过卖家的提示信息上说明，付款只接受 USPS money orders。

原文： Paying by money order: Please note that I ONLY accept USPS (United States Post Office) Money Orders; if you send me any other type of money order, or any check it will be returned to you for a fee.

请问下USPS money orders，这个在国内可以操作吗。

谢谢啦！