So I came across a copy of Eliot Porter's All Under Heaven. This is the limited edition cloth bound with gold foil stamp. #68/250. It also includes an 8x10 dye transfer print. The print is printed by a third party not Mr. Porter. Both the book and the print are signed by Porter. It is still in the publishers shipping box. Absolutely new condition. My question is dose anyone know where to look to find what a price should be for this book? Any help would be great.

Thanks, Rich