I've seen them bring over a thousand. I've no doubt there are some worth much more than that. Any one in particular you want to know about?
I was able to find where a copy (in not so good condition) sold on an online auction. The final sale price was not given, but the estimate was $300-$500 with a reserve of $150. The text and illustrations of that book, are available for downloading via the internet.
won that book finally. $42,66 plus s&h in last minute had to add $25 to win it.. $300-$500 sounds nice, but... what is a real price of the book, how do u think?
The "real price" is what you paid for it, right? One thing will always stand true. The value of anything is what someone is willing to pay for it.