On this page there’s 4 highlights (view in Baymard Premium) outlining what Costco are doing right and wrong.
(Tip: use the arrows above or on your keyboard to navigate all 741 intermediary category page examples.)

The screenshot was taken on October 31, 2013 and depicts Costco’s Intermediary Category Page. In total, we’ve reviewed 65 of Costco’s page designs. To see them all, visit the full Costco UX case study.