From the publishers website http://www.trolllord.com/cnc/8000.html:
This was a limited edition only. Only 1000 were produced. The first 300 were signed and numbered by the authors and artist.
The box set includes condensed versions of the main books, The Castles & Crusades Players Handbook and the Monsters & Treasure guide.
The C&C Collector's Box includes:
1 Players Handbook (5x5 x 8x5)
1 Monsters and Treasure guide (5x5 x 8x5)
1 adventure, The Rising Knight (5x5 x 8x5)
1 set of Zocchi Dice (old school, YEAH BABY)
1 err, box (6x9)
1 product insert