There is an upcoming Wildstar Beta Weekend, and I found a site that's giving a ton of NA keys and there are still 8,000 of them as of this post. If you'd like to try the game, then feel free to snatch a key from the giveaway.
I'm not sure if any other sites are giving away keys as well. Don't forget that this is for [b]NA[/NA] Beta only!
-- Feel free to rep me if you'd like if you get a key. ^^ Thanks!