If you are selling an item, you can either charge a flat shipping amount of your choosing, or use the shipping calculator that ebay provides. It is one of the steps during the listing process, and is easy to do. As far as how you get the money, it is up to you. If you have a paypal account, you can receive money through it (though paypal charges you a fee). If you don't have paypal, you can choose from other methods, like money orders, cashier's checks, personal checks, money transfer, or cash. The buyer sends the payment to you, you send the item to them. Simple.