We target dishes or meals at local restaurants. We take a split of the selling price. Early feedback from merchants tell us that they like what we're doing. Instead of offering $10 for $20 worth of food, we target specific things. Our goal is to answer: "What am I going to eat today?"
The deal structure for users is between 30% - 100% off. When we first launched, we had four 100% offers including an asian taco, thai iced tea, mocha, and fresh brewed coffee. You'll eventually see plenty of items in the Dish Feed that merchants upload themselves (subject to our approval of course) and users will be able to sort this feed.