If you fancy getting your hands on a new Lumia, you might want to consider a deal that Windows Central were tipped about. Microsoft's online store in the US is adding a sweetener if you purchase a T-mobile 640 or AT&T 640 XL costing $130 and $250 respectively.
The store doesn't say which Nokia headphones are supplied until you add one of the phones to your cart. They're the Coloud Boom Headphones which are of excellent build quality. Normally these headphones sell for $20.
If you do decide to purchase, you'll also get a free limited time offer on Office 365 Personal until the end of July. All in all it sounds like a great deal.