Greetings!
There are MoP blues that requires level 80, but they got extremely high ilvl therefore they are sought after for leveling. They are about the level as Dragon Soul heroic items, but they can be used at 80.
Weapons (click me)
Armor (click me)
People currently don't know that they are worth a bit, I have been able to nag some for less than 1k and resell them for 8k+ on a high pop realm.
Hope you get some use of it.