Actually, I'm using Fpsc for Robolegs 2. Got a decent deal with a company that will publish the game to various distributors and outlets. Including Steam. Robolegs 2 will be a multiplayer release with a free download but then you purchase upgrades for weapons and armour.
If you produce a quality game it will inevitably be successful.
I live in South Africa. Into the Darkness demo was available on a demo disc that I get with a local gaming magazine.
Get a good distributor too.
In order to make cash, produce a good game and sell it for about $4. With fpsc you shouldn't be aiming on next gen gfx. Don't get me wrong, fpsc can produce some pretty gfx but it's not current gen. Focus on good gameplay but with decent visuals.
Ensure that you have a good team working on your game too.
Landman