The going rate for a developer is about £300-600 a day in North Europe for relatively common skillsets such as C#. It isn't just silicon valley.
The $10,000 bounty is about right for this sort of work. In fact it might be a little low, but I have no idea how OBS works internally so I could be completely wrong.
I don't think it's a problem of OBS, but the problem of writing a dummy v4l-device it seems. which IS more complicated! (though I wonder what it's used for)
