From this month's sales, Old Testament Profiles & Commentaries of Cyril J. Barber (14 vols.);
I looked at https://www.logos.com/product/36298/old-testament-profiles-and-commentaries-of-cyril-j-barber and for me the dynamic sales price was less than the individual prices. But it sometimes happens that the sum of individual prices is less than the price of a bundle - usually this will be shown as a separate warning message.
I find this happening from time to time. It is not a perfect technology.
Normally, in my experience, this happens when you have an academic discount that is applied to some of the resources but not the bundle as a whole.