• Formula: Enchant Chest - Exceptional Resilience
• Item Level 82Disenchants into:
  Not disenchantable
• Binds when picked up
• Requires Enchanting (410)
• Use: Teaches you how to permanently enchant chest armor to increase resilience rating by 20. Requires a level 60 or higher item.
• [Enchant Chest - Exceptional Resilience]
• 1 Charges
• Vendor 4

Source

This formula is sold by  Vanessa Sellers <Shard Trader>^{[38, 40]} for 4 .

Patches and hotfixes

• / Patch 3.0.2 (14-Oct-2008): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB