There are many great commentary deals for Kindle for the following series. Deals end May 7th.
1. The Story of God Bible Commentary ($6.99 and up)
2. Zondervan Exegetical Commentary On the New Testament ($8.99 and up)
3. The Expositor’s Bible Commentary ($10.99 and up, including D.A. Carson’s Matthew at $14.99)
4. Zondervan Illustrated Bible Backgrounds Commentary ($3.99 and up)