Actually, camelcamelcamel is strictly for Amazon tracking, so it wont work for Walmart inventory. You might want to consider that Walmart prices fluctuate based on whether the item is sold by them or a marketplace seller, so be careful when you are looking at those deep discounts. I would suggest sticking to items shipped and sold by Walmart to ensure it arrives before your parents visit next week. To give you better advice, are you looking for a specific screen size like a 50 or 55 inch? Also, do you have a preference for the smart platform, like Roku or Google TV? Personally, I use PriceDropCatch to handle this stuff. If you install PriceDropCatch it will basically alert you whenever the stuff in your cart goes on sale, which is a lot easier than manual refreshing.