While Dust is out of print and hard to find in North America, it is right now easy to find and cheap from Amazon Germany:

http://www.amazon.de/Heidelberger-Spieleverlag-HEI00132-deutsche-Ausgabe/dp/B001D0HKA4%3FSubscriptionId%3D0N3YSEQ4N1056XPWS4G2%26tag%3Dforum-geekdo07-21%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB001D0HKA4?tag=article-geekdo07-21

As of this writing, they have 7 left in stock.

I ordered mine from there, and with shipping it cost around $50, sitll less than MSRP, and arrived at my door in Canada in less than 3 business days.

It's the German edition, but all components are language independent - all you need to do is print out the rules and whatever player aids you want off the 'net and you're good to go.