^ The core experience won't be much different between the two bar the camera tech and cable/sat TV connections. And that extra 100 dollar/euro or 80 pound difference is big factor, no matter how MS wants to cut it. Because for all its intent and purposes people buy consoles for the games, not to watch TV on them or Skype (though the Skype calls is more useful, I'll give it that). At the end of the day, both consoles will function similarly to each other. Sony will "borrow" features from Xbox One and vice versa. Its just that the camera is not mandatory in the core PS4 package.. giving people like us, the consumer more options what to buy or not to buy with the console.
About that Amazon deal. You can basically order it from anywhere in Europe. And I'm pretty sure you'll be able find more bundles (if not that one) in other countries over the next few months leading up to Christmas.
