Do I have to pay for Ardour?

Inquiring minds may want to know: is there a financial obligation involved with utilizing the Ardour platform? Is there a subscription fee, transaction cost, or any other form of payment required to access the services offered by Ardour? For those interested in exploring the capabilities of Ardour, understanding the financial implications upfront is crucial. Could you elaborate on the potential costs associated with utilizing Ardour and whether or not it's a paid service?