For most people interested in a portable Mac, this model is probably overkill, both in terms of power and price.
But here's something very interesting. The base price of the standard, non-retina, 15-inch MacBook Pro is $1,799. It has the same processor as the retina model - a 2.3-GHz Core i7 - but only 4 GB of memory and a traditional hard drive. The base retina model is $2,199 with 8 GB of RAM and a 256-GB flash drive.
If you configure the traditional MacBook Pro to have 8 GB of RAM and a 256-GB Solid State Drive, it costs $2,399 - actually more than the retina MacBook Pro with similar specs. If you're looking for a machine with this configuration, the retina model is the better deal.
Still, $2,199 is a lot of money for a notebook computer. While there's not really an equivalent Windows PC because of the display, a high-end Dell XPS 15z with similar specifications sells for around $1,600. Eventually, all Macs will have a retina display, and prices are likely to drop.
Unless you're someone who needs an extremely high-res screen - such as a photographer or digital artist - you may be better off with a traditional MacBook Pro or MacBook Air.