No, the iPad with 3G it is not SIM-Unlocked for multiple carriers, it is locked to AT&T. You may use Spirit jailbreak to unlock it and do as you wish with SIM unlock and so forth.
uhh the apple store....
The Apple store doesn't do trade-ins. You should sell it on Ebay or Craigslist.
You can purchase iPad directly from Apple Store, from Apple websites or from a Authorized Apple Dealer in your City or country.
You can go to Apple store
Apple Store on April 3rd
You can get reviews on the Apple ipad. Reviews for the Apple ipad can be found in consumer reports magazines and www.cnet.com/apple-ipad/. You can go to an Apple store and try one for yourself.
~ Best Buy ~ Apple Store
The iPad is sold at: Apple.com Apple Store Macconnection.com eBay.com (Probably)
An Apple iPad can be purchased through many different locations. It can be found through the Apple Store, both in store and online. They can also be purchased through Best Buy.
You can only have the itunes app store on apple devices.
I'm not sure if there are smaller stores that will sell only iPad accessories, but I do know that the Apple store, whether it's online or at a location nearest to you, will have all sorts of different accessories for an iPad.
No Go to an apple store and someone will set it up