See some photos of storefronts here (some are totally legit like B&H, but you see some of the photos and names and you get the picture)
A more thorough investigation would have saved me the trouble. If you've never heard of a company, a significantly lower price from a high cost location is a definite warning sign.
That being said, don't buy a suspiciously cheap camera from a store that's closed on Saturday unless you've done your due diligence. And even then you're taking a risk.
In general I have no evidence that Hasidic jews are any less ethical than any other group of people. At the same time there appears to be an ongoing problem of the ones in Brooklyn using their appearance of religiosity as a cover for committing crimes, especially related to selling stolen electronics and drug dealing. (Jesse Eisenberg was recently in a movie called Holy Rollers, which was about the latter problem.) Sure there are some people who are losing business due to being falsely stereotyped, but it's like 200 people as opposed to 200 million so the social consequences are fairly limited.
The article has the quote "Mr. Borker described his business as fantastically profitable. At his home, that seems unlikely." and goes on to paint a dimmer picture of his prospects.
In the other thread about this article, I noted how this guy has the exact opposite of the Zappos customer service philosopy, and will likely end up reaping what he's sewn.
The sad thing is that many people don't look up a company they don't know. He's likely taking advantage of time-pressed or less savvy consumers.
So basically, he is using a marginal gain strategy of reselling other companies' stuff.