Chinese celadon jar

The jar is in excellent condition. The style and markings were unusual and I decided to try and find some information on it.  It's a light green/grayish color with the lighter designs.  There is one small flaw which is a small hole on the surface. The markings on the bottom are difficult to see, but I was finally able to locate a description of the markings.  It's apparently modern ware celadon, most likely 20th century.  I've seen a wide variety in appraised values in the 20th century chinese celadon and not sure what determines the value.

Good