Hi steve.kerry.5
If you only have a Standalone license, you can only upgrade this license. The upgrade fee for Standalone only from v1 > v3 is $160.
Once you have upgraded your Standalone you can purchase the v3 Plugin license. Depending on the Plugin, the license ranges from $139 to $269.
Kind ...

Okay, I am totally confused now :|

I have version 1.x, I want to take advantage of the special offer to upgrade to 3.x
I don't have any plugins but this is obviously a good time to get one.

As I understand it, the upgrade and plugin need to be in my cart at the same time to qualify for the ...