I haven't had any issues with orders still in progress, but Amazon has replaced/allowed me to return a $1200 tv that was 6 months old after it randomly stopped working/broke after moving apartments. They sent someone out and picked it up--which I seriously doubt BestBuy or NewEgg would have been willing to do.

I had a similar issue to what you describe ordering a vintage item on Etsy and the tracking info provided was fake and delivered to a different address. That was a huge hassle to prove and get refunded for.