This is surely a scam. There are a number of other ways to pay for a purchase. As others have said, credit card being one.
it is easy for those of us with experience buying and selling, computers, etc to think something like your money gram question should be obvious to everyone that t is a scam. But not everyone has that experience to know that.
So thanks for posting the question and making everyone aware of the scam. Hopefully it prevents a member from getting taken by this scam.
Thanks,
Ed