what do you want to have for the copy? I am not a collector, I am mainly after the information.
I located a copy at the H. Adrian Smith library close to where I live. They would even make me a micro fiche for less than $60, or I can go there and view it and make up to 40 pages copies, that would be already half the book.
Anyway, if I can get it for a reasonable price, I would buy it and save myself the trip to Providence to Brown University.
Lybrary.com preserving magic one book at a time.