How much will it cost to build a website like bestreviews.guide?

Hey gents. This website is a great example of a large scale affiliate website that runs more on the tech rather than content since they are pulling products directly from amazon API.

I was wondering if you guys can let me know how much will it cost to build such a website. I am not a developer myself, but before reaching out to anyone, I want to understand the avg cost for building such a website.

FYI, this website scraps millions of products from amazon. So scale is massive. Also if I've to build additional CMS at the backend for basic stuff like adding content, seo tags etc, how much more will it cost?