I pay the equivalent of $29.52/month and I get;

- Genuinely Unlimited Data (see here),
- Unlimited texts,
- 300 minutes,
- 30 day rolling contract,
- Eligibility for upgrades.

I live in the UK though, you can use the App 'Mobile Hotspot' to make your phone an access point, no need for tethering.

Do they still sell N900s over there?

Thanks,
Ryan.