The book has been discontinued.
HUMBLE SUGGESTION: The best thing a sincere seeker can do it is to just refer SRILA PRABHUPADA original unedited books ONLY and take Srila Prabhupada as the ONLY ultimate authority and shelter!!!
All guidance that one need will be mercifully available at his lotus feet by his own causeless mercy. He talks through his books, lectures, letters and tapes. His books are all in all for us and are the rule law book for any seeker who actually wants to attain the goal of Chaitanya Mahaprabhu's descent.
Srila Prabhupada ki Jai!
Hare Krishna!