We paid $20 foot + travel in 2013 (South Florida) for our survey on a 40' cat. Haul out was additional. This did not include going up the mast or full engine
analysis, but was otherwise comprehensive. It did include a sea trial, which can be important. Also a nice full-color report with many photos.
On a sophisticated boat like a Lagoon 400
, you certainly want a great survey so you know what areas need attention, for insurance, and for potential negotiations if needed.
I would certainly suggest ensuring that your surveyor is a Accredited Marine
Surveyor with SAMS (Society of Accredited Marine
Surveyors) and/or The National Association of Marine Surveyors (NAMSGlobal), and also a Member
of ABYC (American Boat and Yachting Council).
Our surveyor was fantastic at answering questions via email
on several boats prior to us ever using him. So much so, that before I ever contracted with him for the survey, I actually sent him a $100 gift card because he was so helpful!
I'd also suggest spending time really critically going through the entire boat PRIOR to hiring the surveyor and taking pictures of anything "suspicious".
You may save yourself the time and expense of surveying a boat that you might decide to pass on. We looked at A LOT of 40 foot cats before hiring the surveyor. Doing some diligence on our own knocked quite a few off the list before we invested in the surveyor.
Good luck - you will find the right boat!