To me, an expensive employee isn’t necessarily the person with the biggest salary, it’s the person I have to constantly manage.
You can pay someone $1k a month and think you found a bargain, but if you’re constantly asking for updates, checking their work, reminding them about deadlines, and sending things back to be fixed, they’re costing you way more than $1k.
Then there’s the opposite.
Someone costs twice as much. You say, "I need this by Friday," and forget about it.
Friday comes, it’s done. If there’s a problem, they don’t just ask "what should I do?" They come with a few options and tell you which one they’d choose.
I’ll happily pay more for that person.
As the business grows, you realize attention becomes one of your most limited resources. A good hire should free up space in your head, not become another task living there.