How much is an ORIGINAL 1927 edition of the Sears Spring/Summer Catalog worth?

Found this catalog in a box of old books. I know there are many reprints floating out there and those are not worth much. This one is definitely an ORIGINAL complete with the pull out order forms that came with them. I have been able to find many catalogs for sale but most of them are not original and not worth much. This is one of two that has a reprint Norman Rockwell painting on the front cover. Again it is in excellent condition with no pages missing. Any help you guys can be would be great. Thanks