Today ITA membership runs from January to December and only costs 35 per year. Catamaran sailing vessels for sale on Boat Trader are listed for a swath of prices, from $4,878 on the relatively lower-priced, classic models all the way up to $5,002,557 for the most unique, one-of-a-kind yachts. spinnaker.(2004?). These boats were originally crafted in the South Pacific as a way to navigate the shallow waters with increased stability, for transporting passengers and goods between various islands. Tornado equips models listed with inboard/outboard and inboard drive power options, available with diesel and gas propulsion systems. * This price is based on today's currency conversion rate.