I am sorry Wouter but I have to agree, If you just take the material costs then you can have a full carbon A cat (fully competitive or not depending on all those other variables between hull shape, foil shapes, sails, etc) for $10K US, BUT, material costs are only one element for a "commercial" builder, don't forget, labour, profit, overheads and that big ugly one TAX. When they are all added together you can approximately treble the material costs to reach an equitable retail price.