(Tip of the hat to Steven (ECGifts), a member at my site FindSpotter.com, who helped inspire this post).
In brief: Not all Amazon customers buy on price alone.
Meaning, if you are one of multiple sellers of an Amazon product, you don't have to have the lowest price. Your 'condition note' (which you can write when you are listing your Amazon product) is a powerful tool that can help you win the sale without being a 'bottom feeder'.
So I'm writing a series of helpful (free) infographs (beginning with the one on the right - go ahead and click on it) for you. This can help Amazon FBA Merchants. (eBay Sellers and non-FBA Amazon sellers: some/most of the ideas in the infographic may work for you too.)
Go ahead and copy my condition notes for your own use, word-for-word, I don't mind.
Critical tip: if you say something in your condition note (e.g., 'No Hassle Returns'), that's a promise to your buyer. You MUST deliver, or face some customer wrath and fury (=negative feedback).
I hope this helps you,