3D FlipBook - Non-profit discount

Hello, Thanks a lot for the great 3D FlipBook wordpress plugin. I am using a free version of the product and I really would like to support it by purchasing a PRO version. Unfortunately my web project is completely non-profit and the the price is much more than my possibilities. I am really sorry for my question, but I will ask anyway. Would be possible to get any discount for one year purchase? I suppose I will be able to pay whole price the next year. Thanks a lot for any answer and I really apologize for this. Jan