I'm not going to go into the logistics of how it is done (It is my business ) but know it is legal and does not breach WoW ToS.
I can offer gold on any other server at a rate of 1.1x (basically for 10k stormrage gold I will give you 11k on the server you need)
I am also offering the same discount on gold for wow time. I have a lot of excess gold on my old server and so basically if wow time costs 24k I will give you 24k on a different server so you can buy your time for exchange of 21.8k Stormrage
Please message me in-game @ targetRogue or battle net Shamonna#1485