It looks like the price went up when Eastmans stopped selling it. No way it's worth that kind of money. I would imagine he will be selling them on his web site before too long.
I bought the book back when Eastmans was selling it and recommended it to a friend a month or two ago. He ran into the same problem and couldn't find it for less than $100. He then went into Cabelas in St. Louis, MO and found a copy for the regular price. He looked all over for any other copies but that was the only one left. You may be able to find it at another store location. Great book in my opinion.
Bought mine at the sportsman show when Cam was still with Eastmans, had it autographed. Great book, I read mine at least twice a year, hope you can find one. I too have seen them at Cabelas. Good luck!