Preordner is available since yesterday for this awesome game. You should be able to do that on the official website (http://www.wildstar-online.com/en/) or at amazon (or gamestop i guess). Normal version costs ~45€ (Idk how much that is in $) and about ~60€ for the deluxe version. There was also a digital deluxe version, but im pretty sure that they’re all sold out since a few hours.
So, if you are intersted, go and buy some.