Thanks for clearing out the situation!
What I know now is that Hannants store in the UK:
http://www.hannants.co.uk/
carries the full line of paints and these paints there are
cheaper than in the US (say at Great Models). But they
would only ship them to the US if I, first, spend more than
30 pounds at thier store and, second, order a kit (they
claim that only having a cardboard kit box in a parcel will
give it enough structural integrity to survive a trip overseas
and protect the paints shipped with it -- sounds ridiculous
but what can I do?). And kits are usually priced much higher
than in the US. Still, if the situation with Xtracolor is so grim
in the US, it would be probably worth it to purchase some
garbage kit for 5 pounds (they have some of these on sale)
and a truckload of Xtracolor paint with it. This option might
be on a more expensive side, but at least there will be no
indefinite backorders.
Serge