Amazon is a website i truly never understood. The website is absolutely terrible.. i mean the layout and styling alone makes me click of before i would ever input my credit card information. It boggles my mind that it manages to be one of the biggest online marketplaces while looking that sketchy.
I have to say though, I'm not from the US and in my country a different online marketplace with a pretty great website and ux won over amazon. It's pretty much the local amazon, just not bad and actually usable.