I noticed this display of bundled magazines at one of the overseas airports I transited through last week. They bag the bundles and put them all in the one section, just below the single copies.
An airport is somewhere these discount magazine bundles make sense as you are less likely to be educating your regular shoppers to not pay full price. Of course there is the argument that they only get the discount for a volume purchase but we don’t have research to indicate if that is the case with a regular suburban newsagency shopper.