eBay is a like a online supermarket , well much larger you can buy anything you want, sellers put them out to sale and if you wish to buy it you can pay from your credit card or paypal and order it
Oka nam attha. Its like winning a gift voucher for odel you can buy off stuff from ebay with that voucher that is if you win. But the chances are very low i guess with millions of users using it So a waste of time