I find the different levels and paging a bit confusing. Some low-numbered pages have less items than higher-numbered pages.
Click on "PC Cables". You get four cables, and two categories "PC Cables" and "PSU Cables". Then click "PC Cables" and you get three categories: "All PC Cables", "PC Cables" and "PSU Cables".
If you click the "PSU Cables" or "PC Cables" the view does not change, but if you click "All PC Cables", you are back to having only two categories. And the same four items are shown on all of these pages.
If you click an item, there is only one back button: to "Home", not to the category.