MMO Champion have the Justice and Valor points cost of some new items, and although we can indeed farm Triumph now to get a nice Justice point stockpile come 4.0.1, the cost of the dungeon blues you will be able to buy for Justice come Cataclysm is sobering.
From the MMOC screen shot, item level 346 gloves seem to cost 1650 Justice and the chest items cost 2200. Given the 2.75 exchange rate for Triumph and Frost, that is 600 Triumph/Frost for gloves, or 800 for a chest.
Your 4000 capped Justice points will then get you one chest piece and some gloves, maybe some other item instead of the gloves. Or if you converted the 1454 Triumph to Conquest before patch 4.0.1, 8000 gold.
I'll be taking the gold in any case. This does raise the question of how much Justice is awarded for a heroic boss kill. If the current 50 Triumph for something like Nobundo's Chestguard of Triumph is a reasonable number, then if bosses dropped 2200/50 = 44 Justice points we would have a similar grind in Cataclysm heroics as we do now. Apart from them being much harder.
Update: Consider This has posted you get 75 Justice per heroic boss at the moment, so that's an improvement over the current rates.
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