If it's too good to be true.........
That's the conclusion I'd come to. The HP Branded ones seemed a possible route, but it's not a thing I really need.
Don't want to raise any more flags with MS, they were very helpful over the OEM issue. Mind you, I'm still concerned what's going to happen when I upgrade my HD. Maybe they won't even allow that - if it's listed in the vast data-base in the sky.