Do Coinstar kiosks charge a fee?

Could you elaborate on the potential fees associated with using Coinstar kiosks? Are there any standard transaction fees that customers should be aware of? I've heard rumors that Coinstar might charge a certain percentage or flat rate for converting coins into cash or other forms of payment. Is this true? If so, how does the fee structure work, and are there any ways to avoid or minimize these costs? Understanding the cost implications is crucial for anyone considering using these kiosks for their financial needs.