Upgrade discounts are based on the version of HM2 owned but can be applied to any version of the HM3 that's equivalent to HM2 or higher. Discounts can only be applied to a single purchase. If product you would like to purchase does not have the discount showing, please contact us through the support system for assistance.
How to use the discount:
After logging in to your HM account (upper right corner of this page) the store will automatically display the discount based on your existing HM2 license.