I an not sure where the shift lever bushing is that should be replaced.
To give you some idea: when I took my car to an independent for trans fluid change he replaced the bushing - I had detected a sloppy shifter but didn't know the cure was so simple - free of charge.

I wanted to strees that it sounds that if your car were put on a lift and the gears were engaged and driven in reverse on the lift, a mechanic would locate the offender in a second.