Picked all this up tonight. All hot wheels is buy one get one half off at toys r us
First the set from the dark knight and batman begins, was 26, got it for $13
Then this at target for 4.99. Like the Halloween one only winter. Why I love this is if you watch the live comics on the bluray live special features on the dark knight there's one where batman goes back to where he got his training with the league of shadows and he's in this costume.
Finally at toys r us for 39.99, from 2010, a 1:18 remote control 1966 batmobile, got a lot of detail for a remote control.