It's no secret that browsing eBay by product categories and further refining your search query can be incredibly frustrating. Happy to see that eBay realizes this and is working with listing tools to assist. A few screens and descriptions of changes made by eBay:

Providing these types of tools will ensure better listing creation by sellers which in turn will improve users ability to refine exactly what they are searching for. The quality of listings is only as good as the seller information submitted.