Nexus One Cost of Ownership With Data-Only Plan and VoIP

Billshrink has a chart that compares the 24-month cost of ownership between key smartphones on different carriers, including the iPhone on AT&T and the just-launched Nexus One on T-Mobile. According to the site, Nexus One nets out at between $2,339 and $2,579, depending on the plan.

What if you could rely only on 3G for all your telephony needs?

Total cost of ownership for two years: $1679.80, or $70 a month including the initial cost of the device. The flip side, of course, is the spotty 3G coverage. The flip-flip side -- no contracts.

Update (Jan 6 '10): Nevermind. It appears that data-only plans are not available for Android phones (see the comment below).