In The Burning Crusade it is item level 115, requires level 70 and sells to vendors for 4g 32s 18c. In Wrath of the Lich King it is item level 251, requires level 80 and sells to vendors for 4g 32s 18c. In MoP Classic it is item level 115, requires level 70 and sells to vendors for 4g 32s 18c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Lurker's Girdle Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Lurker's Girdle suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 10 items nearest to Lurker's Girdle (item level 32) in item level among Armor > Plate, Waist slot, from item level 30 to 35.
Blizzard numbers items as they are created, so the named items next to ID 30678 (30673 to 30683) were usually added in the same batch as Lurker's Girdle: the same quest line, zone, vendor or reward set.