Question : Will Pandora on iPhone empty my wallet?

I have a standard iPhone package, I think.

Data cap, etc

How unwise is it to use iPhone as a Pandora radio walkman?

Isnt this kind of data transfer optimized, like, is there flash audio? effective low mbps?

I know I have data limits and all that, but will pandora on iPhone blow me out of the water?

Answer : Will Pandora on iPhone empty my wallet?

I have been running pandora on my iPhone for a long time.  Although I have unlimited data, I still try to keep someone of a track of what each app uses.  I use pandora at work and on my way home form work everyday.  I am 10 days into my cycle and have only used 100mb.  
Hope this helps

Cb