We currently do not have special pricing discounts for FormsCentral. Non-profits have actually been one of our biggest users of the service, we've heard from them that our service is fairly inexpensively priced relative to the value it provides them. Here is a customer story to illustrate the point: https://www.acrobat.com/formscentral/en/customer-stories/dahmw.html
We've also just recently lowered the price of our Plus plan by 25% (only $11.99/ month -paid annually)
If you have additional questions do not hesitate to send us your feedback.