Went to dealer last week for battery wiring recall for my 2007 530i and they performed a complimentary multi-point inspection. Service guy suggested me to perform brake fluid flush and replace all 6 spark plugs as its approaching 100k miles. He gave me an estimate for about $404 + tax ($139 for brake fluid service and $265 for spark plugs). Is that a right price to have both service done? i appreciate your help..