1287275:how are you gonna transfer more than 20k gold to another server?
The usual way is to buy enough expensive materials you can sell in the new server. This of course does take some effort and can potentially gain you more or less, depending on the prices on stuff in both servers.
Usually the best things to transfer are high demand and high price materials, like uncut epic gems, frost lotuses, etc. Of course you can always transfer things like Mechano Hogs in your inventory, but while their price should be pretty constant from server to server, selling them might be somewhat of a longer term project.
And if I do get a seller, I can at least help him with buying the needed materials, since I have pretty good knowledge of my own server's markets and I'd be willing to scout around on the target server. I do also have few sources I can get certain materials in bulk for somewhat cheaper than the usual AH prices.