Are you going to upgrade your 3G to 3.0 on the 17th? Or have you already, using the GM? Or do you plan to wait to see 3.0 upon the purchase of your 3GS? Jailbroken/unlocked phones fetch more on the Bay, and there's a glut of non-JB/locked 3G phones on there now. Although I'd like to upgrade, just to play around with 3.0, I think it would be wise to wait in terms of resale value. BTW, it appears possible to downgrade the 2.30.03 baseband using "pHaseBanDowngrader" to facilitate unlocking a 3G...but that is not yet possible for a phone upgraded to 3.0.