The Eerdmans Critical Commentary Upgrade prepub product description page says "Want the whole series? Order the Eerdmans Critical Commentary Series (4 Vols.)" -- when you click on that link, you see "We're sorry! That is not a product we currently sell."
1) It shouldn't being trying to link to the whole series if that isn't a product you sell anymore
2) Why are you selling an upgrade in prepub and no longer sell the rest of the series? Is it just an erroneous link, or has this series really been discontinued even though you're prepubbing an upgrade? That would be odd.
