I think I have seen similar things happen before, but I don't recall the solution...
I was looking at the Preacher’s Homiletic Commentary... And, my sale price is more than if I bought separately - at least in the way the math works. It appears that several volumes in the individual listing are at $0.00. And, only 7 have prices.
So, the price looks off. But, it probably isn't...
Still probably needs to be fixed, though.
