Nexus One Apps

So here's the deal, the Nexus One sells for $529 unlocked, $179 for eligible new customers signing a 2-year contract with T-Mobile. And as for existing subscribers upgrading to the Nexus One (Google/T-Mobile says no to Family Plan), they will be able to get it at a discounted price:
$279 - Nexus One with new, 2-year T-Mobile US service plan for qualifying existing T-Mobile customers who are adding data plan.
$379 - Nexus One with new, 2-year T-Mobile US service plan for qualifying existing T-Mobile customers who are upgrading their data plans.

The Google Phone Store will automatically check if you're eligible for the discounted price.

Here's some math for you.

$279 + $80/month x 24 months = $2199
$379 + $80/month x 24 months = $2299
Unlocked - $529 + $60/month x 24 months = $1969