Making It On Broadway Audition Intensives

I saw this on Facebook (Laura Benanti and Kelli O'Hara are advertised as doing masterclasses) and wanted to know the credibility of the organization. Has anyone on here done this or know someone who has done it. It looks like a good opportunity and investment, but sometimes these things are hard to tell. A lot of Broadway stars do masterclasses through them but how are the other classes? It's audition based, but is the process selective at all? I'm just really looking for more information based on something besides their website. Thanks.