Since i've started playing again here on molten,was Cata player back in 2013-2014 and now started in December on Wotlk i've noticed something on Auction...Prices of materials (Herbs,ores) are more expensive than the products you can make with those materials (Jewelcrafting,Alchemy) and as in real life materials arent more expensive than the actual products u make with them so should work here as it was before...The biggest reason to this i presume is 12k players and simply not enough herbs and ores to farm for everyone and thats why is so expensive and made a opposite effect to the economy on Icecrown...Now the proffesions that arent gathering ones are almost irrelevant and all u need to farm and farm and just sell those mats on AH..People who dont have much free time to farm cant make much money and + the competition is insane because of 12.000 players...
In terms of adjusting the economy of the server and make it normal again i would suggest to either make more herbs and ore nodes which is easier i guess and/or halve the server into 2 new ones of 6k players each...
Lowering the price of materials would greatly benefit the economy as the bots wont be getting much money for the materials they farm.