Im looking at purchasing a boat from a fairly large dealer and the boat has a 2019 ProXS with 478 hours.

I asked for a service history and they said it had none. I mentioned the requirements of servicing it atleast every 100 hours and they said yeah thats correct.
I asked had they done a full service when they took it and they claim yes.
Why would they be reluctant to provide the full history? Can I get it from Mercury?
They were willing to give me the motor vin.