Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Its okay-just okay

I was fortunate enough to read a copy of this book belonging to a friend before investing in it. The book is okay and for collectors or people who can't get enough of old scopes, and the information is interesting and very useful-a lot of research. But for a person happening upon an occasional old scope of interest, it isn't worth the asking price of todays market. I suppose if it were such a great book, it wouldn't have gone out of print as enough people would have been buying it to keep it around, but sadly there isn't a lot of other subject related information out there, so if you live and love old scopes, buy-up.