In Cold Blood First Printing-I need help!!!

I, luckily, found a first printing edition of In Cold Blood by Truman Capote at a book fair, and it was only a dollar!

The jacket is torn on the front, but the book itself is in fairly good condition, however. However, the top has been colored black, for unknown reasons.

I'll explain "the top".

When you look at a book sideways, the pages bunch together to form a side of pages. Then there's the top and bottom bunches of pages.

My question is:

How Much Is This Worth!?

Meh, it's good to know that I even HAVE a first edition of In Cold Blood. :D