Brainteaser - Maximizing Chocolate

You have \(15\) dollars with you and decide to visit a local shop to buy some chocolates. The shopkeeper prices each chocolate at \(1\) dollar. He also offers a special deal: for every \(3\) wrappers you give back, you get \(1\) chocolate in return.

How many maximum chocolates can you eat with your \(15\) dollars?