In Wrath of the Lich King it is item level 213 and requires level 80. In MoP Classic it is item level 213, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Deadly Gladiator's Endgame is listed as Vendor. Appearance ID: 7160. 31 other items wear the same appearance; 11 of them are listed here.
Read from the World of Warcraft client build files.
How Deadly Gladiator's Endgame Compares
Who It Suits
Deadly Gladiator's Endgame carries Intellect, the primary stat of Holy Paladin; Discipline, Holy and Shadow Priest; Elemental and Restoration Shaman; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock; Mistweaver Monk; Balance and Restoration Druid; Devourer Demon Hunter; Devastation, Preservation and Augmentation Evoker.
Blizzard numbers items as they are created, so the named items next to ID 42525 (42518 to 42532) were usually added in the same batch as Deadly Gladiator's Endgame: the same quest line, zone, vendor or reward set.