The game ships for free and the reviews are excellent. This is today only while supplies last!
Also, just a reminder that you can also preorder Zumba 2 for Wii which is released 11/8. I can’t wait for this one as there are some great songs on it.
The way Amazon works on a preorder is that you get charged the lowest price available. It is currently priced at $39.99 (I would be very surprised if the game was sold lower than that at any retailer) but should the price drop from Amazon- that is the price you will pay. If you find the sale is better elsewhere you can cancel your order before it ships.