I accidentally damaged the optical drive cable of Macbook pro 15" when I opened it. I am covered under apple support, but since this is a self-inflicted damage, I didn't expect Apple to replace it for free. I was forced to find the spare part myself which is when I found iFixit.
I searched in iFixit and found an identical spare on it which I ordered. I received the piece in 2 days in Singapore. I replaced it in the Mac and it worked perfectly. The packaging was meticulous and the updates from iFixit with tracking in Fedex were wonderful.
In future, I will look into iFixit as my first choice of spare parts. I recommend the same to all.