Where can i fix my cracked iphone 4 screen with a reasonable price?

I need to know before Monday thank you.

I don't know

Ebay. Now you know before monday.

Try going to the mall, small kiosks often fix the screens for 50$ or less. I believe the apple store will do it for $99. So if you can't find anything around 50$ go the Apple Route, safer.

You can also try and do it yourself watching videos, I did mine twice. Simple if you're good with your hands and have allot of patience. Takes about a half hour.