Not sure why it's ~$8 off, but my existing pre-order will take it ha.
Because Walmart has a bunch of preorders at some odd prices. Amazon matched them on a few games.
I was able to snag this as a gold box deal a while ago. My preorder price is $56.99.
Edit: So, I tried talking to a CSR, and I was told that if the price drops, my order update. I sent a link to the camelcamelcamel page showing the price drop. I was then told that the price on the website is $59.99. I told them that the pre-order price guarantee says that if the price drops after my order is place and before it is shipped then I would received the lowest price. I then told them it did drop to $52.48 yesterday. Still wouldn't adjust my price.
I also had it in my gold box and my price didnt auto adjust either. Pretty annoying since they have their pre order price guarantee. Most people wouldn't even know the price dropped and so won't actually get the lowest price. Guess I'm going to have to try my luck with CS.