Yes. Parallels Desktop Standard Edition is available as either a one-time purchase or a subscription. With a one-time purchase, you can continue using the version you purchased without recurring payments. However, future major version upgrades may require an additional purchase, and phone and email support is limited to 30 days.
A subscription includes ongoing product updates and unlimited support for the duration of your subscription.
Parallels Desktop Pro and Business Editions are available by subscription only, with 1-year and 2-year plans offered where available.