ok so my first real contribution im going to give you the way i have been farming gold threw out wotlk and bc all you need is enchanting up to a bc standard not sure of the exact level
this is a very basic guide in nagrand there is halaa in halaa there are some blade vendors here is the alliance one(Aldraan - NPC - World of Warcraft) the horde one is in the same place from these venodors you can buy the item Avenging Blades(Avenging Blades - Item - World of Warcraft) for the price of 2g21s42c these are a limmited supply of 3 every 1 hour they enchanting mats can be :
1-2 greater planner essences
2-5 arcane dust
or a large prasmatic shard
now this may not sound like a good way of making gold when infact its about 400% profit this is where the clever part comes in if you have also a 80 on each faction you can kill the nps wait 5 mins for respwan with a whole new stock
.For example,I buy all the 3 avenging blades with my human paladin and disenchant them.Then,log in my tauren druid,kill the npc,and logout.Relog my huaman paladin,and 5 minutes later,the npc respwan,and with 3 avenging blades.
my i point out for horde it is called sharp cookie also.
thanks very much for looking at my gold guide :>