I found donation-based software does not work very well. However, I suppose it could work like a champ if you have millions of users. You're most likely to find

I found donation-based software does not work very well. However, I suppose it could work like a champ if you have millions of users. You're most likely to find that it'll create an increased need for support since you'll have more users. That might not be the best thing for you right now since you still have a day job. I'd suggest you go with a 30-day trial. The next best thing would be a version with minimal features, and a fully-featured pay version.