In Wrath of the Lich King it is item level 251 and requires level 80. In MoP Classic it is item level 251, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Relentless Gladiator's Chain Armor is listed as Vendor. Appearance ID: 10612. No other item uses this appearance, so it is unique to Relentless Gladiator's Chain Armor.
Read from the World of Warcraft client build files.
How Relentless Gladiator's Chain Armor Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Relentless Gladiator's Chain Armor suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Similar Items
The 10 items nearest to Relentless Gladiator's Chain Armor (item level 35) in item level among Armor > Mail, Chest slot, from item level 32 to 39.
Items Numbered Next to Relentless Gladiator's Chain Armor
Blizzard numbers items as they are created, so the named items next to ID 41088 (41082 to 41096) were usually added in the same batch as Relentless Gladiator's Chain Armor: the same quest line, zone, vendor or reward set.