A store locator answers "where can I find the product?" — it doesn't answer "buy now." The Dealer Checkout is the alternative that turns navigation into a transaction.
A navigation tool. It shows visitors where to buy your product — but doesn't facilitate the purchase. The visitor leaves your website. The sale happens at the dealer's shop, on Amazon, or not at all.
A transaction tool. The visitor selects their dealer and completes the purchase — on your domain, without leaving. You get the customer data. The dealer gets the order.