My g/f's car needs an oil change and she uses VML 5W30 in the engine. A recent trip to the local WM auto section shows the VML is $18.24 for the 5 qt. container. The online price for the same oil at that particular store is priced at $16.74. How do I go about getting the VML at the stores online price? I was going to make a copy of the page downloaded from their site showing the lower priced VML at their particular store. Is this the correct way of doing this? Any advice is greatly appreciated.