Negotiating can save you money and help you earn more over the course of your career. To start off this episode, Sean Pyles and Liz Weston give their favorite tips for haggling, whether you're shopping for a mortgage, negotiating a salary or shopping online. 
Then Sean and occasional co-host Sara Rathner answer a listener's question about why the value of their car keeps changing. They also discuss whether now is a good time to buy a car.
To send the Nerds your money questions, call or text the Nerd hotline at 901-730-6373 or email podcast@nerdwallet.com.