If you are not going to send sticky notes to another users outside the network nor planning to access notes via phone (Android, iOS etc, then, you only have to purchase 9 licenses (one-time payment) instead of using the yearly subscription.
In our order page: http://www.conceptworld.com/Notezilla/BuyNow , you will notice that there are 2 options. Subscription plan and One-time payment plan. You can choose the One-time payment for Notezilla .
Here's a short video on how this feature works: