Apple replaced my iPhone 3GS with a brand new one a month ago due to a faulty WiFi chipset. As a developer I have 4.0 GM with baseband 05.13.04. I've been reading many of the iPhone Hacker Developer blogs and it appears they have already jailbroken AND unlocked 4.0 with baseband 05.13.04. Once this official jailbreak/unlock is released, what do you think a new iPhone 3GS unlocked with 4.0 may sell for online, etc.? I'm curious as I sold my 3G jailbroken/unlocked for ~$250 when the 3GS was released. I'm assuming an unlocked 3GS with 4.0 would go for a good penny. Thanks!