Amazon has Rise of the Guardians (Blu-ray/DVD Combo)
In includes a bonus limited edition Easter Gift Pack that contains two hopping eggs.
The movie is being released on March 12, 2013.
What is great about pre-order is that if the price goes down for any reason (or any length of time) – you are guaranteed the lowest price. Also, if you see a better deal at the brick/mortar stores, you can always cancel your pre-order.
Pricing was current when the post was published, however Amazon prices change often, so please check before you buy.