What if you could rely only on 3G for all your telephony needs?
- Phone, unlocked: $529
- Data-only plan, unlimited (if actually available): $40/mo x 24 = $960
- SkypeIn phone number: $60/yr x 2 = $120
- Skype unlimited calls in the US+Canada: $2.95/mo x 24 = $70.8
- Fring app to use Skype on Android: $0
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).