Haha. My brain went the same direction you did - After reading the post text, I thought OP might be looking to use the device as a standalone media player, not just client. I hadn’t noticed that OP specified “Client” in the title.

Same vibe but I only use the +30s button to enter cook time. Bonus points to microwaves that automatically start when you press +30.

The article was referring to the cost to replace them, which would be both the equipent (camera, solar panel, pole, mounting hardware) and labor.

Edit: so yes, all told it appears to cost $3k to have a camera. But the camera piece alone would cost a lot less than that.