It's a reality of life as a freelancer that many of the jobs I take on are uninspiring. This is an attempt at finding some of the type of jobs that I would really enjoy working on, and hopefully encourage someone to take the leap on a project that may have otherwise stayed on the shelf forever.
For me, I'm hoping to find people and projects that I'll get excited about working with. Giving away $2000 of work for free is about as much as I can possibly justify. I've brought a number of projects through from start to finish (complete code base, from scratch) in under 40 hours, and in this case it would represent the difference between a project costing $1200 and the same project costing $3200.
This could also be enough to get a functional prototype in place to impress investors, etc.
I also find it hard to justify working on my own projects when there's client work to be done.