It's not? I just bought UK plus 25% offi mean, it goes on sale quite frequently but to the best of my knowledge it isn't on sale now. there ought to be a sale on black friday so i'm not too worried about it but sales tend to only last a few days so its easy to miss if you aren't paying attention.
Also, I recommend buying from cdkeys.com. Almost always cheaper there. I've done it many times, no worries about the legitimacy