Points taken, yes, anything is only worth what the buyer is willing to pay. That is the reason pots are "not liquid", because you may have to wait a long period of time for a buyer to come along willing to pay the seller's optimum price for a piece. If you have to sell quick, you are very unlikely to get the prices you need to make the investment a profitable one. It takes time and planning to unload a collection of valuable pots at a profit. Time might also be spent maintaining a network of pottery dealers, so that they are ready to take care of moving your pots when the time comes. Adair, have you made plans for how your estate should liquidate your pots? I don't actually want an answer. I know my estate plan has no real provision for my pots.
Yes, I know Yenling83 is a seasoned, expert bonsai artist with good connections. If he is buying them for his own enjoyment, a collection of useable pots, that is fine. But he will only realize an actual profit, over time if he is careful and smart. There are enough fakes out there that nobody is immune to accidentally picking up a fake. Again I don't want an actual answer, but I bet you might have one or two pots that turned out to not be as valuable as you originally thought when you bought them. I know I have a couple. And I use them. They look okay for my lower end level of bonsai display. Hell, for the quality of my trees, production grade is really good enough. LOL
Yes they are making more antique Chinese pots. Each year, we get another year older. As of New Years, the pots made in1921 have become 100 years old. That's a new batch of pots that graduated from just old to "antique". But I do get your point. There are no new 200 year old Chinese antique pots. So yes, if you buy right, meaning low in the range for the price, when you do need to sell, and you are able to sell at the high end of the range, you can actually make money. You are right, you can profit in the sale of high end pots.
I barely have time to care for my trees, the extra effort to do all the diligence needed to assure making a profit from the pots I own is just more time than I actually have. As an "investment" antique bonsai pots are not likely to pay much better than US Treasury Bonds. And they are not as liquid as a Treasury Bond. You might get lucky and make more, but it is also possible to loose money, especially if you factor in inflation.