In my opinon, it depends on the pricing, whether directly from the manufacturer is cheaper or Amazon.
From my experience, Amazon has not refused to refund me at all whenever an item was lost, not delivered, and the like; I’m not sure about Samsung, though.
It may be helpful to read this purchasing advice from PrivacyGuides.
Be careful with Amazon, I’ve previously been banned by them for “too many returns in to short a time period” and had been paying for prime for five or six years straight at that point.
And wow, I must say I was very impressed! I’ll be sure to buy the most recent device I can afford so that I continue to get updates further into the future.
Their bans are lifetime. I’m still technically banned, it’s just with privacy.com, simplelogin, and an alias name you can make a new account. They won’t accept a VoIP number on sign up so you have to skip that, but once you’ve made the account and it eventually asks for a phone number for shipping it will accept VoIP.