Love em! They are extremely cool!
On the issue of postage I don't see too much of an issue purchasing them directly from Khurasan. I bought a god load of Tanks, infantry etc from him fairly recently, and postage amounted to about £10.
Now that may seem a lot, but considering I can buy waaaay less here, that would amount to less weight in the U.K, yet get charged about £5 (first class) for something that's travelling not even 1/3rd of the distance and have to wait double the time, American postage is pretty prompt. Furthermore I believe if I bought the same amount of kit from various U.K miniature stockists they'd probably charge me the same amount, if not more.