Hi all, I can neither confirm nor deny I did this, as I'm not sure of any official stance on it...however:
If you were not able to preorder the game, or if you're looking to pick up a second copy of the game, and you'd like the option of playing any race in any alliance without paying to be an Imperial, there is a way to get that done. There is a European retail website that sells ESO for around $40 US and you can also buy the Explorer's Pack preorder bonus for around $3.50 US. I don't want to get in trouble for advertising a website in the forums, so if you'd like to know about it, message me in-game or here. I'm @Ruadhin in the game and Ruadhin here.
I'm not getting anything for this, nor can I backup or support anything if you have problems (I've had issues with even major online companies, like Newegg/Amazon), I just thought it was a great backup plan for those of you/us that couldn't preorder for one reason or another.