I don't want to be a **** here, but please don't encourage this behavior. These people have zero intention of filling your order. We have 2 schools of thought on what they are doing: A.The popular belief on the Amazon Seller Forums is that these guys get enough orders that they clear some of the cash out and the rest is returned via A to Z (which is why they usually have every item priced at 9.00 or 13.00 or something dumb like that. They are able to do this because they are from other countries and have longer delivery times before people figure it out. They can set up fake "from" locations now, but the delivery times are still 1 month+ and B.The other thought is that they are doing something with your information as BA explained.
The problem with both scenarios is it ties up your resources, encourages this behavior again, ties up Amazon's resources and, most importantly, makes it harder to sell on Amazon for us sellers. These guys just keep coming back again and again and again and it never ends. They are clearly getting something out of it or they wouldn't keep doing it. It also raises fees for everyone and is just a bad idea. Please don't help these guys. You are not going to get these products under any circumstances.