I don't shop at Walmart for anything - they're stuff is cheap for a reason.
I have been price-checking things a few times and been surprised at how much cheaper they are than everybody else. When I was looking for an electric Jeep for my son I noticed they had the same model as Toys-R-Us for $50 less. After researching a bit I found out that the Walmart Jeep (with the exact same model name and #) is a cheap knock-off of the real thing (stickers instead of tail lights, an AM radio, and other changes). They do this with electronics as well, they will sell a Sony TV for $100 less than everyone else, but it isn't really the same TV. Very deceptive, in my opinion...