In The Burning Crusade it is item level 123 and requires level 70. In Wrath of the Lich King it is item level 123, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 123, requires level 70 and sells to vendors for 1c.
In the Appearances collection, 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 Gladiator's Endgame Compares
Who It Suits
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 28346 (28341 to 28351) were usually added in the same batch as Gladiator's Endgame: the same quest line, zone, vendor or reward set.