If this is a "fire sale" then I'm a bit sad, as I thought the mobile Windows was actually pretty good, certainly made Android look like a bloated pig on the low end devices.
However I won't be rushing out to get this deal, (assuming it comes to the UK) because there's no benefit to me. Microsoft's Android utilities are so good the "seamless integration" advantage of Windows Phone is lost because I can get that same experience on a Samsung Galaxy or LG phone/tablet. And those have a full range of apps. iOS is also pretty good - I use Outlook as my email client of choice on my iPad, OneDrive is also pretty decent, although not as good as the Android version
imho.
Darn, never thought I'd be in position to fan boy Microsoft mobile software.