Buy the soon to be released Brave DS game for $29.99 and you will get a $20 Amazon credit in your email in a couple days! So you are basically getting this new game for $9.99 PLUS you get a $8 movie credit for the admission price of the movie in theaters!
Also, keep in mind if the price drops before it is released you will always get the cheapest price on the game.
The game releases on June 19th
In the end you pay $1.99 for the game and a movie ticket!