Finding out what thing meets the criteria is sometimes hard.
I wanted to buy a set of nail clippers the other day. I wanted a nicer set than the last one I had, which had slowly loosened up while I used them which led to me twisting and ripping my nail a few times. There is also this feeling that there might be better designed products than the cheap $3 ones you buy at CVS. So many basic products have been improved recently (or perhaps we just have greater access to better products that always existed before), at least in my opinion, that I thought there might be some overall better option.
Well, there are options on Amazon, as you will see, but it is very difficult to tell which is better. The reviews are a disaster. Many fake reviews, many products with multiple distinct and unrelated products under the same listing. Even when I found some that I thought seemed good, I would find a review saying that the machining was off with a picture of the front of the clipper misaligned, which caused their nails to be bent instead of cut... etc.
It was not clear at all, even ignoring price, which was the best option.
You sort by price from low to high and buy the highest up thing on the page that meets whatever your criteria are.
If you are constantly buying the cheapest thing that meets your criteria sometimes you get burnt but that's very rare.