Amazon allows third party sellers to sell and fulfill products from different warehouses. And the best part is, you can use a dropship model to sell on Amazon.  This means you just need to list the items. When the order arrives, your supplier will ship the single item and you only have to make the payment for that single item. The dropshipper will take care of everything including production, white labeling/branding (putting your branding tags and slips), and fulfilling the product. Also, you must be the seller and identify yourself as such to use this feature.