To craft the entry level raiding chest
Truesteel Breastplate takes 100
Truesteel Ingot which in turn, takes 20
True Iron Ore and 10
Blackrock Ore.
So you will need 2000
True Iron Ore and 1000
Blackrock Ore to craft this chest. You can wear up to 3 crafted items... so that's a lot of ore.
Of course you could just buy it off the AH... I wonder how much 3000 ore will cost when it takes a lot longer to find and farm from the ground?
Have fun riding around on your favorite ground mount for days farming a chest that can roll random secondary stats that aren't what you were hoping for.
Then get excited to know that LFR drops better.
Yes, yes... many will change their tune once they begin to see past all the "newness" that is WoD.