Understanding StoreLeads Integration and Credit Usage Explained

Hello, Does anyone know how the stare leads integration works with credits. The example that I have is I have already pulled some data using storeleads. If I click at the top of the table I can add additional data from store leads. If I use the same search terms because I just want more stores with the same stats. Is it going to repull the same data and charger me credits or is clay smart enough to only find me new stores and charge for that?