The repair cost estimate breaks down as follows: $1,760 for parts and the balance in labour and taxes. The work is being done by one of the insurance company's "preferred repair shops."
The aftermarket replacement window is $815 (would've been $325 more for OE glass), $530 for new seat fabric as the seat was torn by the stone, $240 for a new headrest, $135 for a new high-mounted brake light, and $40 for a window seal. I imagine some of these parts are OE, as the X-Trail was not sold in the U.S. not everything is likely available on the aftermarket.
So, are these prices reasonable? F*&#ked if I know...
Seems to me it could've been much worse, had the bodywork and paint needed repair too.