Right now, we’re putting together a special “hot deals” episode of Spark, focusing on the intersection of technology and shopping. As part of it, we’ll look at the trend of online dynamic pricing. A recent Slate article explains:

In its most brazen form, it works like this: Retailers read the cookies kept on your browser or glean information from your past purchase history when you are logged into a site. That gives them a sense of what you search for and buy, how much you paid for it, and whether you might be willing and able to spend more. They alter their prices or offers accordingly.

To find out more about dynamic pricing, Nora interview Andrew Gregson, the author of Pricing Strategies for Small Business. You can hear the full, uncut interview by clicking here, or download the MP3. [runs 12:42]