question 4 digits numerical .io domains

[Creative Domainer]

Are the 4 digits numerical .io domains worthy? Does the Chinese get interest to own these domains? And what is the selling scope of .io numerical domains in the comparison with other extensions?

 

[EmpireNames.com]

2 digits numeric .io have some value..
3 & 4 many available for handreg not worth it.

 

[barman]

I would say they are not worth it.