Originally Posted by Blizzard
(Blue Tracker / Official Forums)
We intend to offer bundles of realm-to-realm character transfers for a discounted total price in a future update to World of Warcraft and the in-game Shop. This new offering will allow players to select multiple characters that are on the same account and move them all to a destination realm in one purchase.
We don’t have the final sizes, pricing, and date these new bundles will become available just yet, but we’ll let you know all of that as soon as possible.