I paid around $2200 for my 15" Mac Pro several years ago (including a HDD upgrade and memory upgrade). So one can argue that $2200 with the retina display is actually an okay deal. If you want a really cheap laptop, go buy a Dell. You'll probably be replacing it every year.
Also, it had looked like Apple was going to give up on the high-end market in pursuit of the masses. The rumors (and apparent reality) of no more 17" laptop as well as the lack of an MacPro update and the disasterous first release of the new Final Cut all led in that direction. So I'm actually glad to see that Apple is releasing something for the high end, which by definition is not going to sell in vast quantities.
Having said that, this business of pursuing "thinness" with disregard to everything else by removing the HDD in favor of SSDs, when SSDs are still priced about four times higher for the same capacity, as well as the removal of the optical drive, which I happen to still want and need, is a mistake, IMO. Sure, I can buy an external SuperDrive, but the point of a laptop is to have everything in the laptop. Last year I upgraded my MacPro 15" with a new 768MB HDD (which also has a small embedded flash drive which I believe it uses as a cache). I think I paid $200 for it. A 768MB SSD is what - a $1000? I think Apple should have provided a choice: they could have offered the traditional MacBook Pro form factor, but with a Retina display.
I'm also not happy with the removal of the Ethernet port because I really don't want to go back to the days when I had to carry dongles everywhere. Many of my clients and potential clients don't let you use their WiFi, but do let you use their Ethernet, although usually with decreased capability. If I had this machine and lost or broke the Thunderbolt to Ethernet dongle, I'd be screwed.
Since my 15" MBP actually still works quite well, I have no reason to upgrade, even though I'm very excited about the Retina display. I think the only reason to upgrade at this point would be only if I got heavy into video editing. But I still think Apple did the right thing but releasing a supposedly state of the art, high-end laptop.