https://www.amazon.co.uk/s?k=The+Working+Guide+to+Traditional+Small-Boat+Sails&i=stripbooks&crid=X9VMY4ZV26AF&sprefix=the+working+guide+to+traditional+small-boat+sails+a+how-to+handbook+for+owners+a%2Cstripbooks%2C2633&ref=nb_sb_noss What you see now is not the same, it's comparing apples to oranges.