Iphone 3Gs

just took a look at iphone's catalog n stuffs. i realise that it is quite ex.

here is the chart.




u can see that, a 56 dollars plan iphone cost 288, a 39 dollars cheapo plan iphone cost 548 -.-

quite obviously the $56 plan is better, but i'm wondering if its too much for a monthly plan. and also if 1GB is actually enough for a normal user like me. hmmm.

any comments? any singtel vouchers? lol