Guild Wars 2 - Ordered

Well, I could resist no longer, pre-ordered a couple of copies of GW2 for me and the other half. As I missed the beta's and am not really bothered about a 3-day head start I was pleasantly surprised to find Amazon has the Standard Box version for pre-order for £35, much more reasonable than £50 for the Standard Digital version on the official Guild Wars site. Any idea why that is?

Now, lets get back to scouring the tinterwebs for and possible scrap of information to feed my child like anticipation...