Jivamukti Yoga

has a 4 week beginner course -- 4 classes for $50 ! (drop in class is $19)

Their new yoga center is by Union Square. And while you're there, check out the vegetarian/vegan cafe they have there -- the lentil soup is delicious !

Downtown Center: 841 Broadway, 2nd Floor , New York , NY 10003
Phone: (212) 353-0214