Are you sure you want to deal with customers who only pay you $12/year? Any profit you get from them will be wiped out the second they send you an email and you take the time to read and reply to it.
I’m willing to test this hypothesis. It’s a marketing exercise for me. I used to overthink a lot about the choice of technology, scaling, etc At the end of the day, what matter is selling something that people want and getting feedback. On the other hand, those analytics are extremely simple, they somehow remind me of a more intelligent version a counter widget we had back in ’90. It’s just a POST with some data additional data being trigger at each visit. I’m sure how this could require a lot of support - time will show... and I’m probably wrong. ;) It boils down to my ability to market the product so that I have this support problem in the first place.