This Community Pricing resource is currently at $35, but is on the threshold of $30. Bidding closes at Noon, Pacific Time (3PM EST)
From the product description page:
The International Standard Bible Encyclopedia (ISBE) is an authoritative reference encyclopedia which explains every significant word, subject, place, person, and doctrine in the Bible and Apocrypha! In scope, the ISBE covers literature (apocalyptic, apocryphal, sub-apostolic, etc.), archeology, ethnology, geography, topography, biography, arts and crafts, manners and customs, family life, natural history, agriculture, ritual, laws, sects, music—whatever, in short, may throw light on the meaning and message of the Bible. Over two hundred scholars and teachers contributed to this encyclopedia—including Archibald Alexander, H. C. G. Moule, B. B. Warfield, A. T. Robertson, and more.
Here is the Link: http://www.logos.com/product/18410/the-international-standard-bible-encyclopedia-1915-edition