How do Zopes Exchangeyou get the best deal? How do you know you're getting the best deal? Whether you're talking down the price of a car or talking up your salary, you don't have to be a jerk to get what you want. Negotiations can be win-win – if you know what to ask for and how to grow the pie.

We have three stories in today's episode about how to negotiate tactically. First, a hostage negotiator tries to buy a car. Will he get far? Then, one man's encounter at the airline ticket booth may inform how you respond to your next job offer. Finally, how to avoid a food fight and make a deal that benefits everybody.

We'll learn about something called BATNA, or best alternative to a negotiated agreement, which can tell you when to stand firm and when to walk away. We'll find out how to shift our thinking about what success can look like in a negotiation, and shift your counterpart's thinking too.

Come learn the techniques of expert negotiators in the penultimate episode of Planet Money Summer School, MBA edition. Next week: Graduation! So, you have one week to negotiate the cost of your cap and gown.

Our Summer School series is hosted by Robert Smith and produced by Max Freedman. Our project manager is Julia Carney. This episode was edited by our executive producer, Alex Goldmark, and engineered by James Willetts. The show was fact-checked by Sierra Juarez.

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Music: Universal Production Music - "Lost Situation" and "Growling Sax Surf"; Audio Network - "Una Noche En Jerez," "Martinis and Bullets," "Rock & Roll," "Little Bit Crazy," "Factory Girl," "Spider Shock," "Superheroes to the End," and "Superheroes."