Just surfing around and re-discovered that Scottishkilts.net is still having their tartanday special on select 16oz tartan kilts, including the IoS. Right now, becasue the GBP is only exchanging at about $1.50US their price comes in at around $175 plus s/h (usually around $25-30US), and since the price is under $200 you should get away without any customs charges, even if they ship fedex.

$200US for a good quality machine sewn IoS tank is not too bad, although I know that many of us are not in the best of financial conditions right now. I got mine 6 months ago and paid about $60 more for it when the exchange rate was less favorable. I love mine---nice build and fits like a charm.

Scottishkilts.net is the same company as Tartanweb, who I believe advert here, but has some slightly different deals, including this one.

So if you are looking to join the IoS club this might be the right time.