(keitai-l) is downloading java applets more expensive than other content?

i noticed something strange in a CNET article...
it seems to say that downloading java applets will be
up to 4 times more expensive.

i thought that packet fees were fixed and didn't depend on the type of content.

does anyone know the reality here?

-rolf

an excerpt from the CNET article:
  ( http://yahoo.cnet.com/news/0-1004-200-4522937.html?tag=st.ne.ron.lthd )

> The new service, called "i appli," will be based on Java technology, a programming language developed by Sun
>     Microsystems. The service will allow consumers to download information including elaborate games and
>     automatically updated stock prices. 
> 
>     Initially, two models of "i appli" phones will be available, from Matsushita Communication Industrial and Fujitsu, NTT
>     DoCoMo said. Prices for the phones, which will also link to I-mode sites, have not been set. 
> 
>     The cost of the "i appli" service is covered by the current $2.50 (300 yen) a month I-mode fee, but receiving the
>     customized data will be up to four times more expensive than current I-mode rates.

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