On this page there’s 4 highlights (view in Baymard Premium) outlining what Amazon are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 925 cart examples.)

The screenshot was taken on March 28, 2012 and depicts Amazon’s Cart. In total, we’ve reviewed 90 of Amazon’s page designs. To see them all, visit the full Amazon UX case study.