Is the value of Macao stamps with a circulation of only a few hundred thousand high?

Some Macao stamps with a circulation of only a few hundred thousand have gone up very high.

The circulation of Macao stamps is only a few hundred thousand, but the market price has been very low for a long time. Since the first half of last year, several domestic stock exchanges have chosen Macao stamps for listing and trading, and the transaction price has increased by dozens of times. At present, although the price has dropped sharply, the price is still very high. However, the transaction price in the stamp market is not very high, especially the price of some unlisted Macao stamps is not high (relative to the circulation of hundreds of thousands).