It is in at least the 2nd or more printings of the first edition. (I had balked at the original $100 price tag and by the time I got one it was already in the second printing). In other words, no changes, just sold out of first 2,500 or how ever many copies were printed in the first printing. To go to a second edition usually means it would be updated or added to, or that it had been out of print for a while and brought back. The first printing of the first edition is usually what the 'collector' covets and therefore increases in value more than the later printings.