Was just comapring MBP with rMBP.... what's with the price ?

If you give a basic non-retina macbook pro 8 GB of memory, a 256 GB SSD, and a quad-core 2.3GHz i7 processor, it comes out at a whopping $2,400.

On the other hand, the base retina macbook pro that comes with the exact same specs is $2,200 ???

Why is the nicer model less expensive?? Is there any good reason for this?