I just got a stack of 6 Xboxes sold as-is and just tested one of the 1.4 Mobos, it's working but I am located in germany.
The problem wouldn't even be the costs (they would be prob if you are going for express though, then we are talking about 100+ $), but the time it would take to arrive.
Shipping itself would supposedly take like 5 days or so but the customs could possibly stretch the shipping time to 2+ weeks.
So you may better search one ebay for a stack of like 5 xboes and buy them as there will probably be a 1.4 under them.
-Toby
EDIT: assuming you'd only need the board itself, shipping will be cheaper than 50 $, also I do have a multi PSU that supports 110-240V if needed (remember it would be a PAL console!)
This post has been edited by gelberhase: Yesterday, 04:19 PM