Eight years ago I had placed my first order for 4 DVD's to Amazon. I was of course not in the US but back home and it was an international order. Unfortunately the package was lost and I never received it. I had written a note to Amazon who promptly shipped the 4 DVD's to me without any cost to me (free of charge including shipping).
I did receive the second parcel intact. Amazon went on to say that if by any chance I should received the first package I should donate it to a nearby Library as it would be very expensive on my part to ship them back to Amazon.
That was in 2001 or thereabouts and since that time I have never had to lodge a claim to them for lost parcels.
Two years back it was a false alarm when my package was delivered to our next door neighbor because FedEx guy was not attended to when he rang the bell. It was resolved within an hour when the neighbour himself came with the package. Certainly no fault of Amazon.
As long as the item are available at Amazon I buy from them, Amazon is always my first choice.