Just bought a 2015 Mk 7 Golf R (~54k kms) and got its major service done, the dealer found these issues:

·Battery $524 (In stock) Failed Load Test
·Upper Timing Case Reseal $910 (Sydney) Leaking
·Thermostat Housing $1700 (Sydney) Leaking


Does the above prices sound right? I'm finding the thermostat one a bit difficult to believe

Thanks