About a month ago, my friend got the XBone. Picked up Destiny about a week ago. And today he explains to me that gamespot was reporting Amazon was giving $70 eGC with each Assassin's Creed XBone bundle ($350). Went on Amazon, but it only showed $50. Decided to check Gamestop and Walmart. Basically same deal. Then check Best Buy. Buy the bundle, get Destiny free AND a $50 GC. So I got one. Don't know if we'll upgrade BF4 or not. Will sell the 360 soon as well.
Edit: At the time, we couldn't find anything about it being online only, so we just went to the store and got it. They didn't know anything about the deal, but we showed it online, and they honored it. (Might as well, you can buy online and pick up at store anyway.) Guy (some kid's dad-you could just tell) behind us had a console as well, and I explained the deal to him. Helped him out so he got the free game and GC as well. Well, technically we paid a penny for the game, but I think I can live with a cent for a $50 game, plus $50 GC. Twas a pretty good day!