I've been taking classes with Serafina since March 2011 and she is worth every penny and more!
Her classes are affordable, flexible, and fun. She is a great teacher, capable of adapting to different learning styles, and has a great balance of pushing you, yet never making you uncomfortable. Her class structure allows you to get what you want out of the class - either a casual fun workout or the ability to build your skills and perform with a troupe.
I just took her Performance Hair and Makeup Workshop yesterday and was floored with how patient she was teaching 8 very different women to get out of our idea of how we should look and how to really bring out our inner divas for shows. I NEVER wear makeup, but after seeing what I could do to enhance, I might actually try now.
Also, after having been to some of her performances...she's definitely one of the top-notch performers in the area.