Read from the World of Warcraft client build files.
How Stygian Hide Trousers Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Stygian Hide Trousers suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Stygian Hide Trousers (item level 13) in item level among Armor > Leather, Legs slot, from item level 10 to 19.
+9 Stamina, +7 Agility or Intellect. Crafted with Classic Leatherworking
499 goldon 44 realms
Emblazoned Leggings has the highest item level here (19). The lowest listed price among them is Dark Leather Pants at 65 silver in the US Auction House.
Blizzard numbers items as they are created, so the named items next to ID 239878 (239873 to 239883) were usually added in the same batch as Stygian Hide Trousers: the same quest line, zone, vendor or reward set.