There is currently a major configuration bug with the black market which essentially has prevented any meaningful amounts of T5.0+ loot from dropping for now. The max storage values for T5.0+ gear are set up too high, meaning that the black marekt has not "charge up" to equilibrium level yet, which in turn means that this gear is not being sold to the NPC, meaning that it also won't drop from mobs. The exception to this is bags, as for these, the balancing is correct or maybe too high.
We'll fix that balancing bug as soon as possible. Loot amounts will increase significantly as a result.
We'll fix that balancing bug as soon as possible. Loot amounts will increase significantly as a result.