There are a few excellent books which are actually worth a higher price, at least to some of us. A friend on the Forum (Bob/CNJ 3676) recommended Pemperton and Hightstown: A Chronicle of Railroading through the Farm Belt of New Jersey by John Brinkmann. I never even heard of it until he recommended it. I paid $150 for an autographed edition. I wouldn't trade it for $2000. It is now my favorite railroad book (out of many that I have) which led me to write an article for the PRRT&HS. Also, all of the PRR related Triumph series books are pretty pricey. I told myself I would never get any of them. Instead, getting one led me to get the next in the series until I got them all. Show me another book/series that matches them in research and detail...just like some pay high prices for their locomotives, some of us like a good book every now and then.
Tom