How much does it cost to replace the reverse mechanisim in my 325i? on 2002 BMW 325i

I went into reverse just this morning and it gave a nice big jerk. I have reviewed a couple websites and apparently 3 series BMW's between 2001-2006 have this problem after the mileage exceeds 100K. My car is just over 150K (150,003 to be exact).

Asked by for the 2002 BMW 325i
1 answer
They would know how much , the forum you were on, no??