> Heck, you can buy over 1000 security cameras and still save money.

Not once you pay your electricity bill, though :)

There was a now deleted reply to that, probably intended as a joke, about how the cost of electricity for all those cameras would wipe out the profit.

I was curious and did the math. I'm using motion sensitive security cameras that only record and upload when motion is detected. At the places with the most expensive residential electricity in the US or the EU 1000 of those cameras would need under $5 of electricity per year. There's also the thing that the cameras upload to. I don't know how much power that uses, but it is powered by a 5 W USB power supply so can't be more than $22/year.

This is the most cliched HN thought pattern I've ever seen.