It's actually not a hard repair to make but keep in mind that once anyone other than an Apple Technician opens that cover your warranty is gone and that includes ANY AppleCare warranty too. if you send it out to someone and the repair isn't noticable then you have a slim chance of getting away with it.
I've seen the LCD Screens listed on eBay, but I don't know how safe or what the quality would be. You could perhaps, and this is a suggestion, grab a screen, go to PBFix-it as mentioned above and print out the repair process. Either you can try it yourself or think up a damn good reason to tell Apple.
I know that once Apple fixes something like that your basically getting a whole new system. Which isn't bad IF they fix it. I know you can look around and get a great price for the LCD, but it's the labor that's going to kill you pricewise.