Concordia Publishing House has a collection labeled "The Essential Lutheran Library". The volumes are as follows:
The Lutheran Study Bible
Concordia: The Lutheran Confessions
Lutheran Service Book: Pew Edition
Luther's Small Catechism with Explanations
Treasury of Daily Prayer
The Lutheran Book of Prayer
Reading the Psalms with Luther
Law and Gospel: How to Read and Apply the Bible
The Lutheran Difference
The first two are already available in Logos editions, the remainder are all available as ebooks at the location linked. This would be a fantastic bundle of Logos editions.