Originally Posted by Airwave

I also thought mod would be cheaper than stock but it will always depend on which level you want to reach. Consider that at the top Mod level, you can change your chassis at each race. To be reasonable, you can use a car for a race, the two or three trainings after that then you go to the next race with a new car.

That's absolutely not how I practice RC... I don't know the classes raced where you live, but the most reasonable compromise between speed, fun, and budget is 13.5 boosted. Well configured you can easily reach 70 km/h, which could be more than enough on most of tracks...