YMMV: Your Milage May Vary
Definition: In this case it means every B&M (brick and mortar) store may not be running this promotion in your local area. Hence you might have to travel to a different store where they are offering the deal.
I was at Border's Books last night and they had a huge selection of new DVD for 2 for $12. There were some classic titles in there. The one I remember most was Spies Like Us.