I was wrong in my previous shipping estimate, as that was for the USPS "Medium Flat-Rate box", but the power supply's box is too big for that. It only fits in their their "Large Flat-Rate box" and that costs $58.50. However, using my own packaging it would be $48.15 for Priority International.
If you can do $103 for the psu shipped then it's yours.
And here is my eBay seller id for a reference: cargeek33