I contacted Amazon to see what the replacement process was for a damaged screen. My Kindle Paperwhite's screen had been cracked in overhead storage on a flight, so I had to either fix it or replace it. The Amazon customer service rep told me I could get a refurb unit for $87 if I sent my broken one in, but Amazon was running a special that day, offering a $85 refurb unit to everyone, so I went for one of those. Just to avoid being wasteful, I figured I would get this replacement screen from a4c and try to fix my broken Kindle.
Well, after a couple hours of trying to get the broken screen off the metal innards of my Kindle, I finished and waited for the new screen to come. Don't do this! The new screen from a4c came with the metal innards that everything attaches to. You just have to remove the circuit boards from your broken Kindle and put them on the new screen.
Comparing the a4c screen to the refurb Kindle I got (2nd gen, so more uniform backlight), I can hardly tell a difference. The a4c light is not as even at the bottom; you can see where the LEDs are and there are slight dark spots between them, but by the time the light propagates up to the lowest line of text, it's quite even and perfectly fine for my needs. $25 is a bargain compared to a refurb Kindle, if you're handy. Check out the iFixit guide for Kindle Paperwhite repair. It's pretty simple.
I'm very happy I ordered this screen. My girlfriend uses the refurb Kindle I got and now I have my own repaired Kindle. For $25, I'm very happy with this product.