I've just had to replace my tank, as a little tiny hole appeared (rusted) on the side, and had probably weeped for a while before it let go.
Anyway, I didn't have too much trouble finding another (black) one, but it did cost a bit, and since you guys would need extra shipping it would probably make the expense bigger than it's worth.
It cost me £130 which included shipping, and took 3 days, but that would work out at about $180, and that's before they slap and atleast an extra $25-$50 on for international shipping.
So if that's still within a sensible price range (surely not?!) then let me know and I'll give you the details of a couple of places in England.
D