My 2000 Mercedes will drive but wont shift gears. I can only drive it at 25-30 mph. without the odometer showing a reading of 60-80.

The Mercedes c280 has 175000 miles and according to the mechanic its conductor plate is broken. He is charging me $900 dollars to fix it. Is this a fair price?
I live in California, San Francisco Bay Area.

Thanks for your feedback.

Wrong section. This is for E-Class cars.