Saw this link over on IBC. Interesting--if you have very, VERY, VERY deep pockets. Everything from Dan Barton to Derek Aspinall, and Gordon Duffet. http://www.handmade-bonsaipots.com/
I believe the prices on that site is way high. If you contact the pot maker directly, you might get a much better price....probably less than half on some. I know I did. YMMV
I posted this not because it's a viable source of pots, but because it shows some of the work of potters you don't see that often on the Internet or in the U.S.
Derek Aspinall and Gordon Duffett are two of those.
Also, Aspinall passed away a few years back, so he's not taking commissions anymore and sources for his renowned pots are few and far between--(which explains the extra-astronomical prices for the pots on that site)
I see it a lot on eBay. Sellers try to justify their asking price by referencing to the most expensive site. And you know what...some people bite! It is true, a _______ is born every minute.