Quote Originally Posted by MiRai View Post
If you don't already have the keys lying around, then it's pretty much as Carbs said... Gotta wait for a sale. I just happen to have stocked up on Battle Chest keys over the years (I normally pick up 5 every time they're on sale) and I still have 5x MoP keys waiting to be used.
There is a semi-sale going on now. If you create a trial account then go to "upgrade" on the site, it's like $10.99 instead of the stated $19.99. Not $5 but still decently cheap if you are anxious. There is also a decent special sale for trial accounts on an upgrade all the way through WoD.