If you purchased a license for Photomatix Essentials or Photomatix Essentials RE, you can upgrade to Photomatix Pro by paying the price difference between both products.
The price difference is US$60 for Photomatix Essentials and US$20 for Photomatix Essentials RE.
To receive the instructions to purchase the upgrade, please enter the email address you used when you ordered your license:
If you don't have access to the email address you used anymore, please contact the Photomatix Support Team.