I have personal experience with A&C brokers, where I was looking at a Swan boat
. They are a 100% trustworthy entity, and one well established in Le Marin. There is at least one other major broker there and possibly some smaller business too.
Philippe I met briefly long time ago, on a private, non-business footing. A delightful person. I would not hesitate to do any business with him.
As A&C main business is at Le Marin, which coincides with vast, hundreds-strong catamaran charter
bases, Pierre may/will have extensive experience in surveying cats. He may also know the boat
you are looking at from his earlier experience. Many boats come and go on the market many times.