Hi Bob,
Thanks for checking out our plugins!
We do not currently offer discounts for non-profits, but we do have a Nonprofit Partnership Program that provides a free (unsupported) license for Events Calendar Pro or Event Tickets Plus to approved organizations.
You would not need to purchase two licenses to be able to add our plugins on a testing site as well – this article has some more details on how this would work. Event Aggregator is actually a service that works with The Events Calendar, our free events plugin, and the Personal license is good for up to 10 domains at one time, so no worries there! Since you will be using the same domain, you shouldn’t run into any issues here.
If you set up a scheduled import from a Google calendar and select Overwrite my event with any changes from the original source in the Event Aggregator settings, then the changes in the Google calendar will be made in the events on your site.
We do offer full refunds within 30 days of purchase, so if you’d like to take Event Aggregator or Events Calendar Pro for a test run, feel free to do so! Please let me know if you have any additional questions.
Thanks,
Jennifer