Category pages help exploration; direct links are faster when you already know the exact item. Use both without treating either as proof of quality.
Best when speed, breadth or initial discovery is the main need. Use it to create a shortlist, then verify every decision-relevant detail on the current source.
Best when context, current transaction detail or received-item evidence matters. It narrows uncertainty but still has limits.
Use both surfaces in sequence: discover broadly, verify the live source, confirm the submitted option, inspect warehouse evidence, then compare the final parcel quote and terms.