$25 is a lot per month but it is saving me a lot of time and helping me to find better results so I find it worth it.
I justify the cost by relating it to how it helps me at work. I believe Kagi makes me more effective; my boss(es... :( ) and peers notice, and that translates to better performance evaluations and raises. I don't hide my usage of it from my team, but I don't think they realize how much of an advantage it gives me. Once you get the rankings and lenses tuned to your workflow, it's amazing how it lets you cut through the nonsense of the internet.