I shall not port to OpenPandora or GCW-Zero at launch.
If you're doing it right, it should be really easy to port.
- code from the beginning using SDL, GL, mingw and other portable stuff
- do the Linux port as you go (for PC Linux, steamboxes and such)
- just build it on Open Pandora and change a few settings such as key bindings
- make the PND (that's almost harder than porting a light-weight Linux game where you have the source!)
It will only be hard if you write it with lots of win32 specific code at the beginning. Make it portable from the beginning!
I realise it might be too late now for you to do that with this project.
But if you can port it to PC Linux the Pandora port should be easy, unless there are major performance issues.
Also you can almost certainly find someone here to help you with the port free of charge.
I think Pandora market does have a very high sale / population ratio, because we have very few commercial games on the repo.
If you look at PC gamers, what proportion of them bought a single lesser-known indie game? maybe much less than 0.1%.
Whereas here, it might be more than 1%. Quite a few Pandora owners (including me) will buy every commercial offering to be supportive.
The port should be fairly easy, and I think you can make at least $200 or more if you promote it a bit to the community.
(I guess that's not much, but better than nothing!)