Hi, Can any experienced person advice what is the cost schedule for hiring a decently professional, experienced music/sound designer for background music creation + sound fx, for a casual game like "flo avenue"? Or maybe what are the other alternatives for getting game music? I am thinking all I need is an electonist (not sure if it's the correct term, person who play the electone/organ). Thanks.

I can suggest the music designer for my game:
milaunus

His music was really good, and it wasn't expensive at all.
If you want to sample his music, here is the music he made for me:
GrayCoreSoftware

I would also suggest looking in the Help Wanted forum. I'm sure you'll get more hits there.