It’s very common to see the number 9 at the right end of a price tag. But why? Learn about the psychology of pricing -- and nines in particular -- in this episode of BrainStuff.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

What Do A.M., P.M., and SOS Stand For?
09:18

How Do Fainting Goats Work?
09:04

Does Smog Make Sunsets More Beautiful?
08:23