My watchmaker would not recommend them. It is a piece of gambling if you get a good or a bad result. It highly depends of the person who is executing the redial. And there are reports that if there is a problem, it is difficult to discuss with them as you pay in advance.
Personally, I had good experiences with
http://causemann-zifferblaetter.de/
It takes some time until you get it back, but I like the result. For comparison:
Causemann
View attachment 408160
Bethge (right subdial not centered, minute track nearly touches the indexes): (pic from
@Northernman)
Click to expand...