Walmart can sell the exact model number as your local dealer for less because they are buying in bigger bulk. A dealer has 1 or only a few locations to split the stock among so they might order like a 100 of each item but Walmart is located all over the place and will order like a 100,000 at a crack and split them up among the stores.. At 100,000 at a crack they get a major discount that allows them to sell less than the local dealers and still make a profit. My dad did the same thing when he was alive. His competition wanted it at the same price but the problem was most were ordering half a semi and a few a full semis but my dad ordered 25-35 semi loads at once. Competition didn't realize that. My dad saved lots of money ordering this way. Walmart teamed up with Advance Auto recently. You get free shipping from Walmart if you spend at least $35 at a time. I normally just get cat food there so I ordered a few bottles of brake fluid too. Not Walmart brand either but from advance auto so I got the free shipping for getting my order over $35 even though it came from 2 different stores.