Perfect if you hate your money and want to get rid of it as fast as possible. Extremely overpriced.
I think you (and a lot of people) misunderstand what kickstarter is. It is not a preorder service, it is not an online retailer. When you back something you are more like a miniature (no pun intended) venture capitalist. You are not and should not have the thought that you are getting a deal, instead you are backing an idea so they can get off the ground.
Also, when you back something you are NOT guarenteed to get it or have it be successful. There is a risk. If you can't afford the loss, don't do it. It's like going to vegas.. take only what you can afford to lose.
Presales make all the difference to a start up. Knowing that they will have sales removes all the risk. It doesn't mean its a sustainable business model.... but at least they didn't go bankrupt finding it out. And hey, the fans got what they wanted.