[Johnny555]

I've never had that problem Amazon fulfilled merchandise (but have run into it with some third-party sellers, including one that sent me a product with "Bad - does not work" written on the box, so it was clearly a defective return).

But I have had some bad experiences with "Amazon warehouse deals" where they do resell returned/opened merchandise at a discount, once the product in the box was completely different than what it was supposed to be.

They've been good about replacing/refunding those but now I only order the warehouse deals if I'm ok with waiting for a replacement if the one they sent is bad.