You could try contacting them. They're nice and reasonable people and made up a deal with me based on personal needs, and also did troubleshooting for a glitch I came across.
Maybe just mention that it's a one time project and not for profit.
In case anyone considers a more nefarious and unofficial type of 'group buy', it's not going to work based on how their license works (and probably will be noticed due to the scale of their operation). Plus, you know, it's wrong.