Check out this 1 IN A MILLION AMAZING YELLOW SHARK
http://www.smh.com.au/articles/2004/03/30/1080544467566.html
http://www.smh.com.au/articles/2004/03/30/1080544467566.html
Are they ever offered for sale in the US? They're very common here.
I've caught about 20 in the last month in Botany Bay, up to 5 feet. Not that colour though.
All were released. Most fishermen here regard them as pests.
Most of the lfs here have them for sale from $100 - $150.
are they brakish? 
Are they ever offered for sale in the US? They're very common here.