I haven't read the commercials on the two stores but I believe that Apple takes quite a large percentage of the revenue: does anyone know if Nokia has a lower rate or maybe fixed percentage?

If Apple are charging more then they might be taking out a liability insurance on behalf of the developer from that revenue this would seem to me (not a lawyer though) a sensible route as damages awarded by courts would likely bear a relationship to the monies gained through use of protected works.

The other point I think seems to have been missed in this might be that Apple makes cash from every ringtone you use on your iPhone (please correct me if this is not as closed as I thought) whereas Nokia will need to cover it's costs on something smaller. Also I don't believe there is a legitimate (no hacking) way of installing software for the iPhone so they have to provide a route to gain numbers.