Anything cheaper than millionverifier??

Hello. I know that millionverifier costs ~380$ for 1 M emails validation. Most people said it's the cheapest solution.

However, I was wondering, maybe there are cheaper alternatives to millionverifier? I mean way cheaper. Because I want to clean 5 - 10 M of emails list.

Way cheaper is at what range? I have a solution I use for myself

https://panel.bulkemailchecker.com/purchase/

use this.