Cost will vary depending on material used. For Elvee, and this is Canadian dollars, we spent about 5000.00 staysail, main and genoa and sail cover. We later had a tanbark yankee made. The staysail and yankee are on rollers so this adds to the cost over a hoisted sail. A friend building a similar boat/rig got an estimate from the same sail loft using plain white Material (we used Classic Cream) came in about 3800.00. We used a local sailmaker that has been a family business for 100 years experienced in building gaff sails. Plus, we like to buy local whenever possible.
Rye