Whenever these questions come up, it seems very hush hush to the actual process. For me all I can do is research to figure it all out. I will be glad to share any info I can to the secret underground XM system.
Here we go,
XM does not have a typical ordering system. When the Pre order goes live, you will click the Pre order button which brings you to an online form that will be submitted during the PO window. No credit card info will be taken at that time. XM will contact you within 10days to let you know if the Pre order was successful as they have to VERIFY they can sell to your country.
So the bad part of this is you will need to kind of fill out the form using the name of the person , and address in Singapore, otherwise your submission will be denied. If you can get past that first part, and your PO Submission is successful, then XM will email you back within 10days to ask for Deposit payment. At this point you will have to fill in your real name and US address to match your Credit card. This is another failure point, that when XM sees this, they may reject. I personally have not tried this as I dont have someone in Singapore to pickup from XM store.
All in all for US buyers its a wash. Your safest way to secure a Pre order is to buy from a Middle man seller in Singapore that has good feedback. The middle man seller I have been dealing with charges me 100SGD over the XM retail price that is on their web site.
This can backfire too spending the extra 100SGD over retails as in the case for me when I pre ordered Sandman. I secured the PO with my Middle man seller weeks before the actual PO went up on XM site. I already paid the deposit along with 100SGD fee. Recently I have seen other sellers in Singapore wanting to sell their PO for Retail no fees. For me I know I have Sandman locked in no questions. Yes I could have waited for a deal to pop up, but thats the game when you are in the US and dont have control over the system.
Anyway here is the terms from XM site for pre ordering:
Online Order Submission Form
Please submit your order using the form below.
Please note that submitting a preorder does not guarantee the purchase. XM Studios require a deposit before confirming your order but hey don’t worry, we will be in touch (usually within 10 working days) to explain payment options and methods. Once deposit payment is cleared, your order will be guaranteed!
I hope this helps explain a little.