Can you please add more selections along the left side, 5 more selections for each tier of materials instead of listing all tiers under the one category...

Materials 1*
Materials 2*
Materials 3*
Materials 4*
Materials 5*

As well as list each kind of recipe separately...

Recipe Armor
Recipe Swords
Recipe Bombs
Recipe Helmets
Recipe Guns
Recipe Shields

etc.? Would make it significantly easier to navigate and find things you would like as you don't always want a specific thing so a search would be pointless if your just after a general browse of whats available.

Splitting the items up better, helps eliminate the issue where new auctions are moved from the front page extremely quickly as well.