Just to clarify, it is $900 for the parts and $1,500 total including labor, correct? I would find $1,500 of labor to be very high...
Glad the OP's car is CPO!
2011 Space Grey E90 M3, DCT, Comp. Pkg.
1997 Z3 2.8, Artic Silver, Tanin Red interior, MT
1974 2002tii, Inka, 5 sp manual