Soundiiz paid offers are based on a subscription system.
That means you can subscribe to the monthly billing (you will pay per month) or yearly billing (you will spend one time per year for the whole year) and then cancel your subscription at any time in your user settings.
However, if you only need Soundiiz to do a one-time transfer to a music service, you can take the monthly billing and do the transfer process. Once you have checked all your data in the destination service, cancel your subscription.
You can get more information about the price on our Pricing page & offers.