With all due respect, that is simply not true. You can get started with quads for under $300. My average sale is about $450. It is far less expensive than skiing, snowboarding, photography, tennis, golf, an iPhone, even a gym membership. Not sure where you got your numbers but the most popular professional grade fully integrated racing quad right now is the ImmersionRC Vortex 250, which I sell for $500, and that is the top of the line. Most people start with something much more modest they build themselves. How much is a lift ticket, or a top of the line set of golf clubs? One of the reasons this is becoming so popular is its affordability. The cost/fun ratio is like nothing before it.
But seeing is believing. Check out Skitzo shred this park: https://youtu.be/UvhLrgvfy0w