Not an issue, but in many cases the issue is service quality, not price.

Yeah, you “set” it when you filled it. Then it knows the rotations to look for. And if it is off by a lot, it warns you.

Yeah, but this is the system based on the rotations per meters. Which sucks as it’s not that accurate and only warns you when it’s already very low on air pressure.

The accurate one’s are veeeery expensive.

Yeah, but for short trips this doesn’t apply. E.g. I might drive 30 minutes for a 10 minute stay/task.

Yeah, but you can just deny email that hasn’t got TLS. Many businesses that do business with eachother do this by creating rules in their mailserver.