The Rose Gold MacBook is the same price as the other colors. It's meant to be extremely thin and light with good battery life. If that is important to you it is worth it.
Price wise it really isn't out there. The linked HP EliteBook Folio G1 is the closest match I could find to the linked MacBook.
http://store.hp.com/us/en/pdp/Laptops/hp-elitebook-folio-g1-notebook-pc-%28energy-star%29-w0r84ut-aba
http://www.apple.com/shop/buy-mac/macbook?product=MMGL2LL/A&step=config#
HP Elitebook $1,299
- Intel Core M5-6Y54 CPU
- 8GB RAM
- 256 GB SSD
Macbook $1,599
- Intel Core M5-6Y54 CP
- 8GB RAM
- 512 GB SSD
For this type of extremely light laptop with good battery life. The Macbook is a better deal.
Display: The Macbook uses a higher resolution and DPI Retina display 2304x1440 vs 1920x1080 so images will be more detailed with a better color gamut. Mac OS X also does a much better job seamlessly scaling text for HiDPI than Windows in my opinion. HP has a 4K screen option with an appalling 4 hours battery life.
SSD: Capacity is not the only thing which is doubled. The MacBook SSD is over twice as fast. It uses the Samsung PM971-NVMe. I don't know the exact model the HP uses just the benchmarks. I presume the Samsung PM951 or similar.
Portability: The Macbook is slightly lighter with a slightly larger battery. It is also slightly smaller going by length and width but is slightly thicker. In testing the Macbook gets about 2 ½ hours more battery life. 7 hours for the HP (4 ½ with 4K display) vs 9 ½ for the Macbook.
To be fare the HP has some advantages
Ports: It has two rather than one USB-c ports.
Webcam: It has a much higher resolution 720p webcam vs 480p in the Macbook.
So in this extreme class of ultraportable. The MacBook is a good value.
Here is a review where you can see how the HP EliteBook and Macbook stack up against each other. Ignore the speed testing as they are comparing the high-end Core m7-6y75 option in the HP versus the mid-range Core m5-6y54 option in the Macbook. If you choose the same CPU option speed will be the same. The Dell Latitude is a good comparison as well. The Razer Blade Stealth and Lenovo Thinkpad are poor choices. They are larger laptops with a Core i7, an unfair comparison. They are a different class.
http://www.laptopmag.com/reviews/laptops/hp-elitebook-folio-g1
Although I won't go into detail. The Macbook also provides even better value that the Dell Latitude 7370.
Latitude 7370 $1,439
- Core M5-6y54
- 8GB RAM
- 128GB SSD (smaller and slower)
- 1920x1080 screen
- thicker, heavier, less battery life
http://configure.us.dell.com/dellstore/config.aspx?oc=cto02al737013us&model_id=latitude-13-7370-laptop&c=us&l=en&s=bsd&cs=04
If you are happy with the thicker and heavier MacBook Pro 13. You will get a better performance value for the money. The Intel Core i5 is considerably faster in the base model. The SSD is also faster and the screen a higher resolution. It has more ports with full Thunderbolt 3 speed (model without Touch Bar).
Value wise the base model isn't that great. The 1.3Ghz m7 upgrade will give a considerable performance advantage. The m5 model with 512GB SSD gives a good storage and speed boost. If you need more space.
Personally, I would buy the Macbook Pro over the Macbook. It is still very thin and light with many other advantages. If you do want the Macbook for its ultra sleek profile and lower weight. It is a great value when compared to other models in its specific class.