It is very expensive. I would waive at the guys, with the $150+ motors, as they pass me. It's not worth it to me. I'm in it for fun. Sometimes I get irritated, but they I take a minute to remind myself that's it's just a hobby and not a career. Just remember, they only won due to the motor being faster. At the end of the day, I'm not getting paid for this and I got the thrill I needed. $150 is a lot of money. Especially after almost $15 every few races on tires, entrance fees, snack fees, gas to get there fees, snack fees, bribing the wife fee, etc... oh, did I mention snack fees? Come to think of it, I got rid of my boat because I kept having to dump money in it. u-oh!