A dev post on the Guild Wars 2 forums indicated that they are changing the pricing structure of transfers. Server population will now be determined by average WvW populations, which should lead to a decrease in cost if you’re planning on transferring to Dragonbrand.

Link to the Anet post: https://forum-en.guildwars2.com/forum/game/wuv/World-Population-Changes-Are-Coming

If you’re planning on transferring to Dragonbrand, check out this link to see if you qualify for a transfer fund: http://phisphere.com/wp-admin/post.php?post=3549&action=edit