Definitely not an expert in the prices of gen parts, I think
superspark69 or
erick510 could say something specific, having experience.
On my own I would only add that if you are satisfied with this state, then it is better to buy (if it does not exceed reasonable money for you) because I'm sure these dials don't come around often.
I would be happy with such a purchase for 300$ maximum, especially since it would not be bad to restore it, which is also not free , but it seems that the real prices may be higher.
Also, pay attention to paint flaking. This is noticeable in the subdial circle. As far as I know, this can progress with high humidity.