8. Eye level and end of aisle.
The most expensive version of a product are placed at eye level so it's the first item you'll see. Cheaper options are typically on bottom shelves where you'd have to look down to see it and stoop down to pick it up. A similar philosophy is employed at the end of an aisle. The "end cap" as it's called, is where items are usually put on sale because shoppers often notice those areas, says Thompson.
(AP Photo/Steve Helber)