The free Logos Book for the Month for November is Romans (New Testament Commentary series) by William Hendriksen and Ezra and Nehemiah (Brazos Theological Commentary on the Bible) by Matthew Levering.
You can also purchase six other volumes at greatly reduced prices.
Hebrews (Understanding the Bible Commentary) by Donald Hagner: $1.99
1 & 2 Samuel (Teach the Text Commentary Series) by Robert Chisholm: $2.99
Psalms (Understanding the Bible Commentary) by Craig Broyles: $3.99
John (New Testament Commentary) by William Hendriksen: $5.99
Ecclesiastes and Song of Songs (Teach the Text Commentary Series) by Edward Curtis: $7.99
James (New Testament Commentary) by Simon Kistemaker: $9.99
You can also register for a chance to win the none volume Encountering Biblical Studies series. For all these offers, go to the Logos' Free Book of Month page here and here.