Today’s random set is 3075 Ninja Master’s Boat, released during 1999. It’s one of 15 Castle sets produced that year. It contains 21 pieces and 1 minifig.
It’s owned by 124 Brickset members. If you want to add it to your collection you should find it for sale at BrickLink, where new ones sell for around $30.90, or eBay.