SAS is extremely common in pharma companies. Basically, any company that has anything to do with a clinical drug trial will be using SAS.
In the basic research / tool development parts of the biotech industry, R is common as well. Today, basically every biotech company has some kind of "data science" component (though they won't necessarily have adopted that buzzword).
Either way, in my view this is a far more specific and valuable skill than "HTML programmer".
But employable? Definitely.
That being said neither of my friends knew SAS when they where hired and I doubt there are many places that hire people because they know SAS. They hire people because they know statistics and risk analysis and then send them on a 4 day SAS course if necessary.
Outside of that they're of less use.