A jet ski typically costs about $500 plus annually to own. This includes insurance, basic maintenance, and some gas. The cheapest jet ski currently on the market in 2021 is the Sea-Doo Spark, and the most expensive is the Kawasaki Ultra 310LX. Boats don’t have brakes, but most of modern watercraft do. You also get more features like a learning mode and other things that make having a jet ski easier than having a boat. Depending on how much you ride, or if you financed your jet ski, this number can increase significantly to $1,500 plus. Buy jet skis online from jet ski shop