Once $800 lens was stuck in shipping going back and forth between various UPS hubs. I called Amazon, they saw tracking info and overnighted me a replacement lens. When the original lens finally got delivered, I called Amazon to return it, they initially told me to keep the lens for my troubles.
I didn't believe it, so I reminded the CS that it was $800 lens, if she was sure. She doublechecked and issued me return label. (I know)
Anytime, I had any issue with Kindle, no matter how small, they would send me a new Kindle even if it was out of warranty.
Many times when I tried to return an item, they simply told me to keep the item and issued me refund. (Though they still do it but not as much).