standard price for all e53, 1 hour to remove head lamp and replace the bulb. your actually getting a deal, since the 2004 and up ones, they have to remove the bumper partially to remove the headlamp. i usually charge 1.5 hours for facelift x5 and 1hr for pre-facelift. and this labor is only for 1 side. it is actually 2 hours of labor standard time for removing and refitting front bumper.