[Max5514]

Good day everyone... trying to get some feedback on an estimate i received for doing the Engine coolant service on my IPS600's with 900 hours.
The service involves taking off the heat exchanger, charge the air cooler, fuel cooler, and gear cooler from both engines and sending out to be sonic cleaned and tested....starting at $4K per engine?? Is that a fair price? Have no idea
Feedback will be greatly appreciated.
Luis