story. Reporter: Need to make a run fothe border. Only have a dollar. Make it between 2 and 5 p.M. During taco bell's happy hour. 4:00, I have one hour. And grillers are the only food item on the... See More
story. Reporter: Need to make a run fothe border. Only have a dollar. Make it between 2 and 5 p.M. During taco bell's happy hour. 4:00, I have one hour. And grillers are the only food item on the menu. Soon the fast food chain says you'll be able to live mas for less all day long with 12 different options on its dollar cravings menu rolling out nationwide this year. Its rivals have been at it for years. ♪ the whopper jr. Is only -- 1.29. Reporter: A mcdouble, wendy's chicken nuggets or whopper jr. All for around a buck much the fast food chains are locked in a fierce battle for our wallets that has them practically giving food away. Tremendous number of competitors battling for market share. The new dq 5 buck lump. Reporter: They use the megadeals to get us through the door hoping some will opt for the other items. Called the barbell strategy. Typically a clump of menu items thought of at the upper end, so-called premium or higher priced ends and then you have another cluster of items on the other end and your hope is you will create people up over time. New buy one take one. Reporter: You can expect better deals from sit-down restaurants too. Now at the olive garden after you finish your bottomless salad and bread sticks and an entree your server will send you home with a whole new meal from the buy one take one menu like the stereotypical grandmother. When you're here, you're family. Reporter: All this for $12.95. It's an excellent deal, I have to say it's ang excellent deal because it is. Food for the next week or so. ♪ is there such a thing as food that's too cheap. Experts warn against discounting too much and too long because it can damage a brand's image. Olive garden says it's its most popular deal ever. A ton of food. This right here is what i brought back and these are the taco bell drigrillers. We'll take a quick break so ron and I can crush this taco
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