The Librams are farmable in Dire Maul, but the Pristine Black Diamonds that accompany their quest turnins are a low drop from all level 60ish mobs. So there will always be a need to purchase the diamonds off the auction house, for players working on the meta achievement.
In the case of Junkboxes, a Rogue of 58-60 or better needs to farm them. BRD Arena area or Hearthglen are favored areas for this task. Expect 50-100 junkboxes per hour. They fetch 10 gold each or more from would-be achievers, who often post on official realm forums to find a lockbox farmer to hire.
Here's a list of Insane items and "moving prices" observed since 3.3.2:
- Libram of Protection - 150-200 gold
- Libram of Focus - 150-200 gold
- Libram of Rapidity - 125-150 gold
- Pristine Black Diamond - 200-250 gold
- Heavy Junkbox (Rogue farmable only) - 5-10 gold
The BOP ingredients that accompany Libram of Rapidity discourage its use as a quest turnin relative to the other two librams listed. Once in a while, the librams are severely undervalued by a seller, and can be found at the price of the other level 60 quest librams (5-10 gold), a very easy 150-200 gold for the reseller.
How to profit off these items? Snipe them and resell at or above the moving price (May vary based on your realm's economy; mine is high population). Or, if you want a grinding option, farm Dire Maul for librams (and cloth/greens/blues to disenchant), or Hearthglen pickpocketing if you're a rogue.
On my realm I am one of only a few players whom I consistently see marketing to this niche, but I'm sure that will change as posts like this spread the word. This can only be a good thing from the point of view of the achievers who will end up paying less for their quest goods. Good luck!
