Things to be aware of:
It's a $25-30 one way cab ride from the strip.
If you're not local, you're looking at $20 for a class.
This amounts to a $80 yoga excursion. That's intense.
The instructor was knowledgable and fun. Made a concerted effort to know every single (100 people) person's name. Impressed.
The facility was nice in the front but the rug they used was stinky, on a mild stench (1) to disgusting (5) scale, they rate about a 3.
As far as I know, there aren't any screaming intro deals.