[crashybear]

So BestBuy will hand me this thing for $399 in store after telling them about price match with AT&T?

But more than that - what is the SIM unlock potential for such a non-contract AT&T device? I need to use it overseas.

[ggong5150]

As long as there is a local ATT and they have them in stock they will meet the price. Also may want to print the off contract price from ATT's website.
From my understanding and what I've done in the past all you need to do is call ATT Support and tell them you are going overseas for a period of time and they will provide you the unlock code for your phone.