Crafters, you wouldn't sell an item on the AH if the NPC offered you more. Other people are no different, its fast easy and saves a slot. if you want it pay more fore it make it worth selling. With these dropping in campaign the players choice would be to let the goblins have it.
I do also agree with Atesh, as it is not the crafters that set the price it is the player, but it is the crafter that sets the items worth so both are sort of to blame.
Guys... don't you see, that these are needed for X-Potion to break the limit of Artisan? What about pushing up the price to 2k or 3k? Just a typical supply and demand game...
I need one of these to make the guild item x-potion, I would par 2,000 for one of these just to get it over and done with as i'm sure many others would too.