This book is selling at $75 at all major bookshops.
My copy is brand new letting go at $50.
It's good for professionals.
Check out the rave reviews at amazon.com
http://www.amazon.com/exec/obidos/tg/detail/-/0321245784/qid=1106708008/sr=8-1/ref=sr_8_xs_ap_i1_xgl14/002-0988767-6641663?v=glance&s=books&n=507846