I came across a Gu JingZhou on sale for US$35,000. The question at the tip of my mind is how on earth would i know if it is genuine. There is no fake pot for comparison :) as they told me that all their products are genuine.
I did ask the question on how did they know it was genuine. They told me that their owner knows the man and used to visit China often. That is why he has a lot of his products.
Btw, he also have a lot of Jiang Rong and other Masters for sale. Again my only question is, how will i know if they are real? Is there a certification body? Or is it based on trust and reputation?
I don't think there are too many people who could reliably authenticate such a pot, though there are plenty of people who could probably spot hallmarks of a fake (if they saw the pot in person). I don't know of an official certification body (Charlie or someone else might), but I would beware of paper certificates, which are a dime a dozen and easily forged.
Collecting Yixing requires both skepticism and a willingness to trust your own judgement. If it's ever possible to be ready to buy a US $35,000 pot, I think you will know when you get to that point -- for me, I'd want to trust the source (have purchased less expensive pots from them in the past and they have all stood the test of time), have some sort of independent "expert(s)" take a look at the pot, and also be confident that the pot is worth $35,000 to me even if it turns out that Gu Jingzhou didn't make it.