She's always recommended natural supplements for weight loss and performance enhancement.
People are slamming her for "selling out" but she explains herself here.
http://www.facebook.com/note.php?note_id=134999455926&ref=mf
I have no idea what the cost is. I'm sure it's not cheap with the quality ingredients. I would take her stuff before any other brand because I trust her after watching The Biggest Loser, listening to her podcasts and reading her books.