Show is in Hannover, Germany.  Takes place every two years (next one is in Nov 2013).  Starts on a Sunday, finishes the following Saturday.  First two days are the "exclusive days" for the press, large VIP customers, etc.  You can go as well, but the price of a ticket for these two days plus the first regular day is $120.  (otherwise the daily ticket is $30 and the season ticket is 80 for the remaining 4 days).