Google has new program to sell Android phones directly to developers. The Android Dev Phone 1 is both SIM-unlocked and hardware-unlocked. SIM-unlocked means you can use it on any GSM carrier you want. Hardware-unlocked means you can run any system you want on the phone, not just officially signed ones. No more need to worry about security patches taking away your root access.
The device is $399. You will need to purchase it through the Android Market as a registered developer (a $25 fee). We wonder how long before the unsigned bootloader starts getting flashed to T-Mobile phones.
UPDATE: While shipping is free in US, it is incredibly expensive everywhere else. Yes, we bought one.