hi seema,
i am a regular buyer and would like to contribute my two cents worth.
i find that eBay international has got things right to the dot when it comes to many things like mobiles, computer equipment, etc., where one gets to filter not just by price but also by major features and brands. It is a major headache for a buyer to browse through the electronics categories since every seller has his own way of listing, and the sellers of sub-standard items take advantage of excessive reliance on keywords for searches. although this is not suggestion for new categories per se, sometimes more filter options have the same effect as segregating in categories, at least from buyer's perspective.
as for categories, for sunglasses there should be separate category for official branded ones and look-alike/non-branded ones.
thanks.
-- Signature: I am Jack's complete lack of surprise.
-- Signature: I am Jack's complete lack of surprise.