Plenty of folks have paid that for Litchi and consider it money well spent. Sign up on the website and play with Mission Hub to see how fun it can be to setup a mission. Then you can use an app that was written called Virtual Litchi Mission that you can actually simulate the mission with Google Earth. I cannot stress enough how incredibly fun and productive this combo is.
But, it really depends on how you fly.
You can find Litchi on sale periodically - I used some Play Store points and waited for it to go on sale a few months back and got the Android version as a backup to my iOS app for cheap.