I have always wondered, it is either something is doggy about Clicky, or others are really expensive. Clickly could do a million page view for $20/month, while others, even the simple ones that aren't as feature rich such as Fathom, offer anywhere from $29 / $50, to Matomo which is over $250 per month.
Check if your analytics vendor can do drilling and segmentation, and be able to dig into raw data. If that is possible (+which is a hard thing to implement), then costs are way higher.
What's the Catch?