Now that the dust has settled, we've had time to look more closely at the 3G data price plans offered to iPad owners by the different carriers. Looking at their offerings, it is clear that for extremely heavy data users, M1 currently has the cheapest 3G post-paid plan.
Based on a 100GB of data a month (chosen mainly because I know how to divide by 100), M1's Data Unlimited plan comes up to 36 cents per GB, just pipping StarHub's iPad specific plan by 1 cent. The most expensive carrier is SingTel's whose plan costs 94 cents per GB. (This is based SingTel's cost cap of $94.16)
Among pre-paid plans, StarHub is the leader when you look at plans with data limits. StarHub's cost per day is 53 cents, compared to M1's 67 cents. StarHub also leads per GB, clocking in at 21 cents versus 67 cents for M1.
However, for heavy data users, SingTel's offerings are untouchable, mainly because the other carriers do not offer unlimited pre-paid plans. The 30-day plan is the cheapest at $1.65 a day.
Since my HTML skills do not extend to tables of any kind, you can see the calculations in the Google Docs spreadsheet here.
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