Question about Boat Surveys

[meirriba]

I have surveyed a boat where the parties agreed that any fault/faults reported by me that were not disclosed beforehand by the seller and that their combined cost of fixing were over X% percent of the agreed price will be either a dealbreaker or a discount ( the oustanding sum over X only).
The buyer had the right to choose beteeen the options.
After survey I got quotations ftom 2 boatyards to fix the issues found and the deal was made.