Wow what service
Left fan went out in my MacBook Pro Retina 15". I was out of warranty last fall.
I'd already been inside my computer to add a larger SSD drive and have opened it up to clean it out so I felt comfortable with the repair after looking at the repair guide. I took paper cups and marked them all with the location for each bottom screw so that I made sure to put them back where they belonged as they're not all the same length. Be careful flipping the catch for the fan ribbon cable.
Now for iFixit. I ordered the fan and it arrived super fast and installed it that day. When I started the computer back up I could hear the new fan as it was really noisy. I tried several trouble shooting things and then e-mailed iFixit. They were quick to get back to me and let me know that they'd send a replacement. Not only did they send a replacement but it came next business day with a pre-paid return label. Both fans arrived extreamly well packaged.
Overally it was an incredible experience in this day of not good experiences. Thanks iFixit!