Best Buy has brought back their trade-in program and this time they'll give you $200 or more towards the purchase of new iPad with Retina display when you trade in your old one. They'll accept 2nd and 3rd generation iPads for the trade-in and the value you get will be based upon the condition and capacity of your current iPad.
While Best Buy will put the value of your trade-in on a gift card the catch is that you must use it towards the purchase of a new 4th generation iPad, nothing else. That means if you get the minimum $200 for your old iPad, you'd be paying around $299 out of pocket for a 16GB WiFi iPad with Retina display.
Trading in your old iPad may be less headache and much easier than dealing with eBay or Craigslist but you'll probably get more money going those avenues. Either way, it's a decent enough deal for those who just want to walk in and back out with a discounted deal on a new iPad.
Source: Best Buy