Amex is amazing with their purchase protection. I've only used it once. A few years ago.
I bought a brand new tablet. It was about $500. I got it, was playing with it and dropped it on the stone floor the first day.
I called Amex, told them it was 100% my fault, I dropped and destroyed the thing. They said to trash it and I had a 100% refund on my card the next day.
This was an Amex Platinum. I don't know if other cards are different.