Perhaps 'overcharged' is a better term. When I see two different laptops, with side-by-side comparisons, and one is far weaker for the same price (or far more expensive for the same specifications) then I personally consider the worse deal to be a 'rip off'.They are not a 'rip off' anymore than a toaster is a 'rip off' for watching TV.
Psshhh you didnt look high enough! 2100 comes with 650m. A Deal! (id take one if i could, the screen is amazing)
I won't deny the Retina displays would be excellent for more professional applications. It would even be fantastic for gaming. Assuming your GPU was capable of handling the graphics at such a resolution. I'm not too sure the GT 650M would be acceptable for more than light gaming.