I got my tank from ebay. The gentleman I purchased it from said that he had to have it imported from Italy via Canada and it ran him about $400 to do. I picked it up for $275 from him. I have seen a tank advertised through Touratech USA, for $339, but I don't know if they actually have any in stock or if it'll have to go on the boat and take forever. Here's a link to it:
http://www.touratech-usa.com/shop/sh...o?sku=100-1040
I personally like the look of the black one better, but I guess you take what you can get when it comes to accessories for these bikes in the US.
I'll see if I can find a model number on mine when I get home later this evening.
--JOsh