Basically, it's the figures with the Boba sticker on them. AFAIK, they are the legacy figures from the movies (not the cool Clone Wars figures). Target here in VA generally has a better price on them than places like Walmart or K-Mart. Based on what I see, you have until 3/31/11 to send off for it. Although I'm not sure I would wait that long.
Brad
PS- Yes, I must admit to collecting toys at 35.