Ho much does it cost to replace a cracked iphone screen?

Long story short; my iphone 4 dropped on the ground and shattered a little more than half of the screen. It still turns on and works perfectly but obviously its not usable unless I want to cut my finger tips. My phone also doesn't have any insurance on it. Can I still turn it into Apple or does anyone have any recommendations of somewhere to fix the screen?

Added (1). Sorry, I meant how not ho.

Usually, more than the entire phone is worth.

RadioShack does it for $60. Many malls have little iPhone repair kiosks that'll do it for very cheap also.

Apple will chrage a fortune to repair your iphone. And all they do is replace the outer touch glass with a new one. You should get a replacement touchscreen part and repair it yourself. The parts are quite cheap online and there're tons of tutorial videos on Youtube.
http://www.tvc-mall.com/details/Black-Front-Glass-Lens-Replacement-for-iPhone-4-I4s/