If you purchased a license of the Photomatix HDR Plugin for Aperture, you can upgrade to Photomatix Pro for the $20 price difference between the two products.
Photomatix Pro includes a Plugin for Lightroom that gets installed when you install Photomatix Pro.
If you haven't tried Photomatix Pro yet, you are welcome to download and try it.
If you wish to keep the Plugin for Aperture when you upgrade to Photomatix Pro, or are interested in the Tone Mapping Plugin for Photoshop (CS5 and higher), you can upgrade to the Photomatix Pro Plus Bundle for the $40 price difference with the Aperture Plugin.
Please enter the email address you used to order the license.
If you don't have access to the email address you used to order anymore, or don't remember it, please contact the Photomatix Support Team.