You can choose from three types of license
One Site – $39
Five Sites – $69
Unlimited Sites – $149
One site license is available for six months – 180 days.
Five and Unlimited – 365 days.
In any case, all pro features are still available after pro license has expired. The expiration of pro license regards only to support and pro updates.
Also you can extend it for $19. ( One Site license )