As genuine feedback, you have a long way to go. First of all, plausible can be self hosted and it won't cost you a dime. Secondly, there are atleast 50 analytics services out there that are self hostable and they clearly indicate what features they provide. It is good expect value for your efforts but the other person buying for 49$ also needs to see value. Perhaps add a list of features, some GIFs, screenshots of your analytics tool in action showcasing various parts?
create GIFs to show common use cases that analytics users would actually expect like out of all the people that came to my website, how many of them signed up, or how many of them added something to the cart and did not buy etc. Add GIFs that showcase the dashboards from your product for these actions
