Problem is that none of these options are available to
Natel Easy (i.e. Prepaid) customers. At least the GPRS roaming charges of CHF 14.-- / MB (in 30 kB increments of Rp. 42 ea.) are also valid for prepaid customers.
This comes to not quite 0.9¢/kB, which is not too bad as far as prepaid data roaming goes. Granted, nowhere near the old Wind prices, but in this day and age you have to be thankful for small favours
I recommend checking the balance carefully while using GPRS/UMTS packet data services when roaming, though -- it seems their billing system is ... uhm ... less than precise (to say the least).
Speaking of Swisscom -- seems they lowered voice call roaming charges for their prepaid customers in most european countries (from CHF 2 incoming / CHF 3 outgoing to CHF 1 incoming / CHF 2 outgoing) and some more coutries beyond (e.g. US/AU/NZ/TR: from CHF 3/5 to 3/2).
At least that's what their Website claims these days.
Regards,
Chris.