I signed up for an account with them ages ago as well. I was looking for video game drop shippers and computer part wholesale supplier. I didn't like the ones listed on WWB simply because I got a better margin elsewhere but it did require a starting purchase.
I will also say you need to go in knowing more than "perfume" The search is designed so it helps guide you to suppliers. So typing in Perfume tosses out suggestions for "Designer Perfume" and Designer Inspired Perfumes"
Just searching for basic "Perfume" returns:
Drop Ship Wholesalers 31
Light Bulk Wholesalers 49
Instant Import Buys 281
Liquidation Auctions 0
But Searching for "Designer Perfume" returns:
Drop Ship Wholesalers 1
Light Bulk Wholesalers 1
Instant Import Buys 3
Liquidation Auctions 0
I will say I like they additional information they supply. They list how many items fall under that catagory are being sold on Yahoo, Ebay, and Google shopping listings. They also tell you rough competition, which I kind of disagree with because it is based simple on the simple keyword for the category "Designer Perfume" or "Perfume". They also provide a snapshot of Amazon listings to give you an idea of rough selling prices.
So personally not sure on distributors in various niches.