Here are the costs quoted to me in March 2014. :-(
Does anyone have any idea if this is the typical USA cost?

Bevel Box Isolation - parts $490.00 $490.00
Bevel Box Isolation - labor ••• 20hr@ $70.00 $1,400.00

Centa Drive compensator - parts $1,260.00 $1,260.00
Centa Drive - labor ••• 25 hr @ $70.00 $1,750.00

Steering Kit - parts $126.00 $126.00
Steering Kit - labor ••• 4 $70.00 $280.00

Fan Kit - parts $135.00 $135.00
Fan Kit - labor ••• 3 $70.00 $210.00