Perhaps the sales shrank, so the author decided to sell it exclusively for larger amount ) Another google session brought me here:
Here's a little info I dug up on Crossword generators that made me think twice about trying to make my own in the timeframe that I have:

http://www.delphiforfun.org/Programs/CrosswordGen0.htm
http://www.gtoal.com/wordgames/crosswords.html
If you don't want dynamic crossword puzzles, there is plenty of stuff like this: