Yes, they estimate the wild population at about 10,000 and restricted to a very small near shore area. That is why they may seem plentiful to your collectors. They are the perfect shark for a captive breeding population vs wide collection. Small, rare, hardy, short time -5 years is my guess , to maturity.
They are live bearers however so the production yield will likely be low reducing profitability vs an egg laying shark.
I contacted the curator of the animal collection of our Smithsonian Instutute and as I expected they were very excited when I offered them my dead specimen They did not have one in the US collection. They do now.
Definitely post picks when you get them.