It seems like a natural buyer would be someone like a student who wants to kick the tires of the whole running a small business thing, but start with a better baseline than merely "from scratch", mitigating some market risks, as it were, and reusing existing code.
What I like about this is that rather than all the research and development going to waste, it's helping someone else. So if you want to start a new thing, you can try to buy the closest thing that's already there, and stand on the shoulders of the previous generation.
There's an idea for a market place lurking in there somewhere. not so much from "get the most cash for your side project", but from the "find a good use for your old work" angle. I have a couple of projects I want to offload myself, and I care more about them being put to good use than about finding the highest bidder or whatever.