At the time of going to press this polybagged set is available at
Walmart.com in very, very, very, very, very (count them) limited numbers for $10.00 plus $5.99 for shipping. Given that
the home theatre version has just been released it's not a (Han) shot (first) in the dark to suggest this is a promotional tie in - so there might be a less expensive way to add this to your collection if you are also shopping for the DVD or BluRay.
UPDATE: They've all gone now. But oddly the price is down to $3.97 plus shipping.