Tudor Ranger MT5402 movement servicing?

I am considering purchasing a Tudor Ranger which is powered by their MT5402 movement.

It would probably be a pre owned watch, with maybe 2 or 3 years of what I understand is a ‘transferable warranty’ remaining.

After that period am I committed to Tudor only servicing or can the service, spares, etc be sourced and provided by an independent expert?

Any idea what a service from Tudor would cost?

Thanks