I got free international postage when I bought the 2 front grill R Design badges for my 2013/14 XC60 .
When I ordered 1 , had to pay half price postage , when I clicked on 2 , message said I'd qualified for free postage , so I continued to checkout and pay , sure enough , no international postage charged .
It may pay for you to buy 2 kits and see if you qaulify for free postage.
iIf you email Scot at FCP , tell him what your after and he will give site members half price postage.
I've never had an issue with them , longest wait was 10 days.