The same deal came up for Halo 4. This was the in store receipt that someone got. We were both able to price match the fry's $49.99 price with made it a total of 89.98.
They slipped up and put up the deal on eastern time, so people on the west coast got a small sneak peak. You might get lucky and try to get a best buy rep on the phone to help you out with it.
Yeah both the xbox live and points should be on the receipt. The best buy cashiers are morons and don't know about promotions. i got the internal process sheet so that way they couldnt fuck up.