You can get Raspberry v1 camera clone now for less than 4$(!) with free shipping on aliexpress: https://www.aliexpress.com/wholesale?SearchText=raspberry+5M...

And unlike v2 camera, the cheap v1 camera allows (besides high framerate capturing) for global external shutter capturing as well(!). I did capture an in flight 109m/s airgun pellet 10 times in a single multiple exposure frame! https://stamm-wilbrandt.de/en/Raspberry_camera.html#global_e...