My motivation for this project is to solve the problem of fake products on Amazon and eBay, but I'm not sure how big a problem this is for other people. (Please be as skeptical as possible!)
Trust is a difficult problem to solve ... any one can put up a website with search results and claim that they are trustworthy.
At the minimum, you would need to test/review each product. Provide truly valuable insights, and touch/feel each product side by side.
There are several people that do this in their respective niches, and make a quite a good living for themselves. But keep in mind it took them years of doing it for fun and acquiring taste before anything worked out.
Based on your original post, if I visited the site.It would feel like one of those low quality affiliate link stuff websites.
But if you add some truly valuable insight,data etc. It could be worth it.