Sometimes you run up against something you just never thought would be an issue.
I called up a supplier today to order a 1kg bucket of fancy material. I had the part# from the website, and a quote for the price (a very fancy price, I might add), and my credit card was in hand to seal the deal.
"Oh I'm sorry," said the polite salesperson, "we can't ship that to you."
And why ever not?
"That material can't be shipped outside Germany because of conditions under the Missile Defense Treaty."
Turns out if you coat this fancy material on, say, a warhead, it becomes invisible to radar.
Well I guess that could be a problem. So no 1kg buckets for Miss Outlier.
The only reason that product was on the website at all is for big industrial players who need giant amounts. In those cases the supplier company will go through the hoops of getting export certificates from Germany, the corresponding import certificates to the U.S., and all of the red tape in between. But for us tiny researchers requesting sample sizes (yes, 1kg is a sample size), it's just not worth it to go through the hassle.
Fine. Moving along...