That could have something to do with Amazon's sorting/searching features, which are so bad that the results are often comical, with random unrelated results intermixed with the thing you're looking for.
Default sorting is by the "Featured" variable, which probably means 'makes most money for the seller', rather than something that actually benefits the searcher. This is a guess, it is not defined.
I think they maybe, finally, let you sort items when you're searching outside of a specific category now, but that's a relatively recent development.
It doesn't help that less than scrupulous Amazon sellers are constantly changing products around so that reviews don't line up with the product description. That widget you've found with 100 five star reviews, well, it turns out that the reviews were for a different product, but you can't tell unless you go read enough of the reviews to figure that out.
The problem with the large catalog on sites like Amazon is that it's impossible (at least for me) to sort through it if you are just browsing. If I'm in a bookstore I always find new and interesting books that I end up buying and enjoying.