headlight ballast blowing

Hi, Recently bought a lovely CLS in these long summer days so didn’t test the headlights (lesson learned). Took it to my local garage and needed all new parts, ballast and so on and cost £300 for the pleasure. Just out of curiosity does that seem excessive?

Hi, I have a reacurring problem with my 57 plate e220 estate. I have replaced at least 4 of the xenon headlight ballast resistors now and it keeps happening. Can anyone shed any light on this problem and how to stop it happening over and over, on average, every 2-3 months now. Many thanks, Nic