On the Preaching the Word Upgrade 2 product description page, it says "Want the whole series? Order the R. Kent Hughes' Preaching the Word Collection (19 Vols.), the twelve-volume upgrade, and the two-volume upgrade!" But that is bad advice. If you buy the 19 volume collection, you don't need to also by the 12 volume upgrade, because it is entirely contained within the former. Instead this should say "Want the whole series? Order the R. Kent Hughes' Preaching the Word Collection (19 Vols.) (or the twelve-volume upgrade if you already have the first 7 volumes) and the two-volume upgrade!"
