Dropshipping is a business model where an online retailer does not keep products in stock but instead relies on third-party suppliers to fulfill customer orders. When a customer purchases a product from the retailer's website, the retailer purchases the item from a supplier, who then ships it directly to the customer. The retailer profits from the difference between the wholesale and retail price of the product. Essentially, dropshipping allows retailers to sell products without investing in inventory upfront, which can be a cost-effective way to start an online business.
While it's true that dropshipping requires less upfront investment than traditional retail models because there is no need to purchase inventory in advance, you have to only make an order when you received order on any marketplace by customer
In dropshipping, the supplier earns a profit by selling products to the customer at a retail price and buying one product at wholesale price
Basic document is needed to start as a registered seller on amazon like GST number ,PAN card ,cancelled cheque