If you're in search of an affordable camera that can capture high-speed video footage, the Sony ZV1 is a great choice. It's a compact camera that's both fun to use and impressively powerful. It offers excellent low-light video capture and its ergonomics make it comfortable and enjoyable to shoot with for long periods of time. The ZV1 also offers a dedicated video mode and a variety of advanced features that make it an excellent choice for beginner filmmakers and YouTubers.
Another option to consider is the GoPro Max. It's a miniature camera that offers tons of benefits in a small package. Its stabilization qualities, 360-degree video, and high-resolution capabilities make it a great choice for capturing high-speed video footage. Additionally, GoPro has several models currently on the market, so you can find one that fits your budget. Plus, since cameras generally don't depreciate in value or performance nearly as quickly as other types of technology, you can find used cameras on eBay or from reputable retailers like B&H Photo Video, MPB, KEH, and Adorama.