Yes! If you have selected a plan that is currently monthly, we'd love to have you upgrade your subscription to an annual membership.
To do so please go to your account page and you should see a blue box at the bottom of the page with a link to upgrade. If you don't see this for any reason, just let us know.
Your account will be pro-rated to take account of any time you have remaining on your current subscription period, so you will see any payment changes on the checkout page.