Perhaps, with another $25, you could get a web API that accepts parameters, and hosted somewhere free (e.g. Google AppEngine)
Another $25, and a nicely designed (super simple) front-end webpage using that API, also hosted somewhere free.
Different skillsets, modules with limited scope, trivial for the right person, dynamically combined.
EDIT Ah, if you don't get/like solutions, you still lose your money. It goes to charity (a nice way to discourage abuse by askers, and keep the tone cooperative) but needs to be factored into the price. Also, the cynic in me notes that if the founders aren't submitting early-reddit style faux-bounties/answers to build community, they probably should be...
Rather than using Bountify to get completed projects it's probably best to ask for help with specific algorithms or approaches.
People answering could be those wanting to learn about something (eg, someone wanting to learn a bit about matplotlib) or an expert who wants to encourage best practice. Or someone wanting to build up a reputation for a resumé.
I agree that when compared to actual wages it's very cheap. The bounty is more a way of saying "thanks!", of buying someone a coffee for their help, rather than paying them for their work.
This usually works when the guy giving the bounty is not just another random guy on the internet.