HOW MUCH for NEW GEARS INSTALLED?

If it was me i would just but a new set of gears , two new side bearings, innere and outer pinion bearing , seal . Another thing is it bearing noise, or gear noise .And another thing i see alot of good members on here with these third members for sale all the time , even if you had to go to a 742 case , alot cheaper then 900 bucks . Thats just me though.