It’s part of Amazons business model to make returns so easy. There have been times when I purchased two or more pairs of shoes with the intention of keeping the one that I want and returning the rest (unworn) for a full refund. I’m under the impression that this is what they want and there’s nothing wrong with that.
I do think it’s stealing to order a pair of shoes to wear once at a wedding and then return it. (I may be wrong, reach out to Amazon and ask them directly if you plan on doing this.)
As far as the seller being from Brooklyn or Lakewood- they know very well how Amazons business model works and it’s a risk they’re obviously willing to take. (That doesn’t mean it’s OK to steal from them.)