You can order the cartridge for about $60, after that it's 2 wires to solder the cartridge unscrews...
Other than that most repair shops are charging $100 an hour so it's not worth fixing unless you know a shure dealer who will sell the part for cost.
I'm going to have to charge $100 an hour too, because repairs don't make any money.
My friend at Grand Central music is making far more money from lessons. Repairs are not worth the space in the store anymore....
anyway the repairs I have enjoyed doing for sooooo many years are being priced out of existence.
I do a really clean job, just like the factory, the amps work like new. But nobody gives a

anymore.
You can thank manufacturers in China and their $29 microphones for that.
Rarely anybody recognizes the difference, between a $29 POS mic and a real Shure microphone.