This is the cheap amazon one I was looking at:

https://www.amazon.com/Dual-Lens-Industrial-DXZtoz-Inspection-Waterproof/dp/B09988R4D4/ref=sr_1_2?keywords=plumber+camera&qid=1683602793&sr=8-2&ufe=app_do%3Aamzn1.fos.f5122f16-c3e8-4386-bf32-63e904010ad0

I'm assuming the products you use are more like this: https://www.fiberscope.net/plumbing-inspection-camera-miniflex/

Top one seems to be more for simple stuff, bottom for more complex problems.