And deliberately so
They removed all but the most basic search logic years ago, so you have to wade past page after page of irrelevant results. Plus they try to bury listings offering a product at a fair price with duplicate listings.
Take for example Hammermill blue, standard copy paper. You can pay 48$ for a 10 ream box, but you have to find the link as there are pages of listing for 5 or 8 ream boxes at 2.5x or more per ream, plus the Amazon Basics version shows up multiple times at $49 for 10 reams.
We buy the stuff 20 boxes at a time, so if one of my co-workers uses the search box instead of the bookmarked link, it could cost us more than a grand. I resorted to using external search to shop on amazon on a regular basis, as often the amazon search results don't even return results for what I am looking for. I have also shifted to using them as the vendor of last resort. Sucks slightly to have to pay more and wait longer, but honestly it's been easier to adjust to than I expected, especially since most of the companies I work with now genuinely appreciate my business, value my time and sanity, and generally don't suck.
Don't make the Torment Nexus, and don't shop and Amazon or Walmart if you can reasonably avoid it. Tank their results for a couple quarters and they will come crawling back to you...