I've worked in retail for the last 6 years. What they descride in the artical is refered to as mass merchant pricing, (Anything ending with a number other then 9) walmart, kmart, target. are examples. In my company i do alot of importing from asia. Typically with most of our goods (excluding electorics) we work right with the factories that make the goods so our first cost is very low. We will mark the product up 100 points (200%) then promo the item for 50% off. This way we are still marking 50 points (100%) on the product. We have a very strick guide line on our IMU around 52 points (again excluding electronics). Now mass merchants work off a lower IMU around 30 points, whole sale clubs like sams, costco and BJ's work off of a 15 point IMU. Because of the volume they do they can sell these goods at lower MIU's and still make a huge profit. While my company works off of a 50 point IMU no matter if the product is bought over seas or domestic. I would say that if you see a price ending in a 4 or 7 or what ever it is, has no bearing on weather or not the price will go any lower. If these merchants have stock that isn't moving at an exceptible rate will will be marked down further.