Lost audio on my 1st gen Macbook Air. Apple quoted me $300 to fit it, local computer tech quoted me $250 just to look into it. I got it done for $30 and about 20 min of my time.
Super simple with the photos and instructions. My MBA works good as new!
Buy the Spudger, it's worth it's weight in gold! And be really careful not to mix up your screws.