In Reply to: you get posted by lenny on Monday, 5. May 2008 at 10:42 Bali Time:
the actually cost of the number and SIM card is only 25,000 rp. You can buy a SIM card for 30,000 rp and this then gives you 5,000 rp credit.
The whole process of purchase and registration should take about 3 minutes.
As mentioned by Lenny, it is all too easy.