1998 Prius 90k miles (avg. 33k miles a year, 90% hwy) I've only been to the dealer 1 time to replace a HID bulb. I change my oil at home every 7500k Mobil 1. Recently replaced the cabin filter and air filter and tires (25k ago) I'm going to the dealer for the following services on Tuesday Coolant change $100? Trans Axel fluid change $100? PVC valve $25? Brakes clean/adjust/replace (I have a slight humming noise in the back) Any insight on costs or additional services ?