So as i was playing i noticed a lot of players do not know what are the Prices of the new Items.
I would like to brief everyone in to the prices and the locations where you can buy your items.
Let's Start off with the first gear.
The first gear is Tier one which is sold by the Armor and Weapon Vendors at the Start Zone for a current amount ot Badge of Justice.
The second is Tier 2 (The old Wrathfull Gear) It is now Located in Zul'Aman. Also the Tier 2 Weapons are Dropped by The Last boss of the Instance Zul'Aman named Zul'Jin
The third is Tier 3 which is located in the Raid Instance named : Black Temple and it is not changed.
The forth is Tier 4 which is now bought from the Vendor in the mall. The vendor needs you to gather 5 of the new marks that drop from the Bosses in Sunwell (Mark of the Deciever) + The Tier 3 Item which drops in Black Temple. The loot for those marks is for every single Party member. Which means everyone gets a mark when you kill a boss. When you get 5 of Those marks and you have the current Tier 3 part go to the mall and buy your Tier 4 Mark
The fifth is Tier 5 (Cataclysmic Gladiator's which is known as the old Tier 8)It hasn't been changed.It's Located in Hyjal Summit and you still need 5 Marks of Upgrade,Love and Heart of Darkness + Tier 4 Item to complete the quest for your Tier 5 Part.
And now for the Newest Gear : Tier 6 (Insane Gladiator's)
Let's Start off with the new gear. Every single part of the gear Needs you to gather 4 of "Insane WoW Mark of Honor" and you need to have the current Tier 5 Part to buy your Tier 6 Part. The price of The Mark is shown on it's Description.
The Weapons are a bit different. You need to do arenas to gather Arena points + You need to have The Tier 5 Weapon (The weapon you want to buy) It's like upgrading it but from the shop. The Amount of Arena points is Displayed on the item's Description.
And The Off-gear (Rings,Trinkets,Backs and Necks) They are the same as the Weapons they need you to have The current Tier 6 Off-part + A current amount of arena points which is shown in the Description of the items 
Subject: Item Prices and Locations 
Thu Feb 06, 2014 5:18 pm
