Not only does it not include housing and retail accessories but It is most likely a knock off. See this Amazon verified purchase review:
1.0 out of 5 stars Defective device, April 13, 2013
Amazon Verified Purchase
"This review is from: GoPro Hero3: Silver Edition HD Camera with Retail Packaged Accessories & Travel Bag (Electronics)
Defective camera. USB connection to computer was intermittent and did not work 9 out of 10 times on 4 different computers so I know it is the camera. The wifi also did not work despite doing the firmware upgrade 5 times both automatically and manually. The battery is a generic one that did not have the GoPro label on it. The camera did have a serial number inside
unlike some of the other lower cost sellers on Amazon for this item.
It just smells like a knock off to me, you can also find these knock offs on eBay for around and lower than that price, just remember a knock off is not a GoPro