I would like to suggest doing a bundle of some of Benjamin keach's books, two of them are available in bundles:
His book on the interpretation of parables is available in the classical studies on the parables:
http://www.logos.com/product/28587/classic-studies-on-the-parables-of-the-bible
Also his book true godliness is available in the classic baptist books collection:
http://www.logos.com/product/8602/classic-baptist-books-roger-williams-heritage-archive
Also it would be great if his book Tropologia, a key to open Scripture metaphors was included:
pdf form: http://archive.org/stream/MN41603ucmf_0#page/n9/mode/2up
amazon reprint from EEBO: http://www.amazon.com/Tropologia-containing-explication-translated-Testament/dp/1171280785/ref=sr_1_2?s=books&ie=UTF8&qid=1373062716&sr=1-2&keywords=Tropologia+Keach
Also his book on preaching the metaphors published by Kregel:
http://www.amazon.com/Preaching-Metaphors-Kregel-Reprint-Library/dp/0825430089/ref=sr_1_1?s=books&ie=UTF8&qid=1373062792&sr=1-1
This would be a great bundle for logos to add to their reformed baptist resources that are available.
