Ok, this is again a speculation, but call it a more studied one. Gizmodo has claimed access to pre-launch webpages at Google.com/phone which is claimed to be the sole store from where customers can purchase their Nexus One phones.
It is also learnt that the phone will be available unlocked and without subsidy. Alternately, you may also choose to gain some subsidy if you choose to go with a T-Mobile 2 year contract. So, here are the pricing details
Unsubsidized and Unlocked : $530
Subsidized with 2 year T-Mobile contract : $179.99
Car docking station : $49.99
Desktop docking station : $39.99
Right now, there is only one T-Mobile plan of $79.99 monthly that comes with the phone. Willing to take it? Let us know in the comments.