Try Bookfinder.com, you can put additional description info like "limited" in the keywords to narrow results, there are check boxes for signed copies and first editions.
My bookseller wife adds that you may not find the limited on bookfinder, if it is there, you probably want to throw out the bottom and top prices you find. Also, a potentially more meaningful source will be prices realized of auctions. Sotheby's started as a book auction house, and may have current information of what that book may be worth. There is also ebay completed auctions.
Also, the WestLicht Photographica Auction may be another source to try; https://www.westlicht-auction.com/in...ssl=off&lang=3
I haven't checked the value, but I'll gladly buy it from you for $62.95