Drop Shipping

Drop Shipping is a type of selling in which the seller does not keep products in stock, but instead passes buyer orders and shipment details to drop shippers, who then dispatch the products to the buyers directly. The sellers make their profits on the difference between the wholesale price and retail price.
Many sellers on eBay also use drop shipping service. Typically a seller will sell an auction item, and the shipment will be made directly by the wholesaler to the highest bidder. The seller profits from the difference between the winning bid and the wholesale price, minus any selling and merchant fees from eBay and Paypal.

You sell without inventory. Increase the number of products that you sell in your shop without increasing your inventory. Sell hundreds of products on Ebay, Amazon, Yahoo, and your own web site without ever having to handle anything.
Sell hundreds of products from a home computer in a corner of your room. Don't get involved in shipping, don't handle goods, don't buy goods, and don’t put up with breakage and theft and all the other hassles of having a hard goods business. Use other people's money. You don't have to pay for anything until after you sell it and until after you get paid. You keep your profits before the product is shipped. That’s Drop Shipping