John MacArthur Bundle
John MacArthur just completed his life goal of preaching through the New Testament, some 43 years after he started. In a January interview, he said he'd complete "some time in the summer," and he did just that.
http://www.gty.org/resources/Sermons/GTY133_Theology-and-Ministry-An-Interview-with-John-MacArthur
At the same time, he said it would take him another five years to complete his commentary series.
However, I notice you sell a MacArthur bundle now, even though it is not fully complete with a finished commentary set.
http://www.logos.com/product/8132/john-macarthur-bundle
I suggest you offer customers bundle benefits on upcoming commentaries within the series--either include the licensing in the bundle now, or else include bundle-like "pennies on the dollar" pricing for future volumes to those who purchase the bundle. In so doing, you should move many more of these bundles, and protect your customers from deadly hesitancy, from buyer's remorse, and from dissatisfaction with the Logos system.
Thank You!