I would say probably the nearest AT&T store. They will probably give you the most for your money. If not there try best buy. They may have exactly what you are looking for.
Phones 4 u
The best place to obtain an iPhone 4 sim card would be at the nearest AT&T storefront. This may be located inside a Best Buy or as a stand alone store.
The best place to buy iPhone accessories is either EBay or amazon.com EBay is typically cheaper but the items of are lower quality, while Amazon is of higher quality but more expensive.
IPhone 4 accessories can be found on lots of different websites. You can get them at Wal-Mart or Best Buy even. The most expensive place to get them is the Apple Store.
You can find a good deal on iPhone 4 either online or at Best Buy. Best buy has a great little sale here & there on iPhones & I am pretty sure you will like to get a great deal too.
You can buy accessories for iPhone 4 online at various retailers such as Wal-Mart, Target, Sears, JCPenney and Macy's. You can find accessories for iPhone 4 any occasion you may need.
YOU CAN'T buy an iPhone 4 because THEY DON'T exist.
The best thing you can do is to buy a hard case for your iPhone 4. You should also get a universal dock where it can be stored safely. Be sure to buy a crystal film to put over you iPhone which protects it from fingerprints.
Yes, actually it's the only carrier you can buy the iPhone 4 from in the US.
The IPHONE 4 is by far the best.
I can think of two stores which might have this unlocked iPhone 4 for you to get there. One is target. The other is best buy. The 3rd is or could be radio shack.
You can buy an 8GB iPhone 4 from Apple!