If you were planning to move to a new server this may be a good opportunity to do it for free. Drysc reports some US Servers who may transfer to new servers at no cost.

Drysc: We will be offering free character moves from selected high population realms to other, lower populated realms to assist in population dispersal. The ability to move a character on the selected source realms will become available on Thursday, December 6 at 12:01 PM PDT, and are scheduled to run until Thursday, December 13 at 12:01 PM PDT.

In the event that a realm meets our transfer goals before the scheduled end date, the transfers to that realm will be disabled. We highly recommend that if you are planning to transfer that you do so at your earliest convenience.

Once the transfers open you can begin your transfer by visiting the Character Move page located here: https://www.worldofwarcraft.com/account/character-move.html

Source Group A
Burning Blade
Kel’Thuzad
Laughing Skull
Arthas

Destination Realm A
Jaedenar

 Source Group B
Spinebreaker
Mug’thol
Mal’Ganis
Tichondrius

Destination Realm B
Nazjatar

Source Group C
Sargeras
Dragonmaw
Bonechewer
Illidan

Destination Realm C
Maiev