http://eu.battle.net/wow/en/blog/10158003/This_Week_Only%E2%80%94All_Character_Services_50_Off-04_06_2013
The EU servers have all character services (Race change, faction change, server transfer, etc) on sale for 50% off this week.
While I personally feel these 50% off prices should be their permanent price, I'm not the one in charge of dictating the prices. Will said sale be coming to the US servers?