Transcript for Retailers Gear Up for the Third Biggest Shopping Day of the Season - 'Green Monday'
Next tonight, to your money. And to a new tool to save you some cash with 13 days until Christmas. It turns out today's actually the third-biggest shopping day of the season, and tonight here, a new app that alerts you when an item on your gift list drops in price. You can even get a refund. Here's ABC's Linzie Janis. Reporter: First, it was black Friday, then cyber Monday. And today, it's green Monday. You have heard of green Monday? No. Reporter: Turns out, the second Monday in December is one of the biggest online shopping days of the year. Green Monday is another excuse to sell us a different sale. They are using this last stretch before Christmas to sell things they have a little bit too much of. Reporter: What to buy right now? Clothing. The gap, J. Crew and banana republic. Tonight, all offering 40% off almost their entire sites. Best Buy was receiving this 70-inch monster screen for $1,299. Tonight, just $899. And don't worry if you feel you've lost out on a deal. Paribus is an app that tracks prices after you buy. If it sees a drop, it automatically contacts the retailer and gets you a refund. And David, retailers know that shoppers procrastinate, so, hundreds of stores have signed up to make this Friday free shipping Friday. David? I'm one of them. Linzie Janis with us tonight.
This transcript has been automatically generated and may not be 100% accurate.