This is an attractive piece of kit ... until you look at the weight. 2,6kg? Wow. Might as well get a 14-15" machine with similar specs, it would weigh roughly the same (i.e. be nearly as portable, simply requiring a slightly larger bag), provide a larger display, better cooling, and probably cost less to boot.
No thank you.
The recently updated Gigabyte Aero 14 has nearly identical specs, but it only weighs 1.9kg - and has a 92Wh battery and 14" display to boot. The only thing it lacks is TB3. It costs more than the base Alienware 13, but comes with a 2560x1440 IPS display as standard, as well as the i7 (which not only is an optional extra on the AW13, but requires you to move up to the $1499 model and add $150 for the upgrade).
This simply isn't a good deal, let alone a well-designed product.