NextDNS Pro is also €25/year. Super reasonable and ridiculously good product.

Agreed. I don't make enough queries a month to need a pro account but would gladly pay if needed.

My network makes 3,401,347 queries in a month, that's more than 11x the limit, but regardless, the price is so reasonable that even if I didn't exceed it I couldn't really motivate not paying when the service is as good as it is.

With that many queries, do you utilize the business tier or just the pro? Asking because I'd like to get this service on my company's computers.

Just the Pro, but this is my home network, it's just that I'm a Pro user hehe.