computer science revision

online auctions

an online auction is a public sale in which goods or property are sold to the higgest bidder

diffrent online auctions

• ebay 
• ebid
• music magpie
• bidz 
• shpoock 
• rockybid 
•        

features that they have?
     
  Auto-bidding – bidders can set a maximum bid and leave the system to bid on their behal

   Sealed Bids – hidden bids, often used for pledges or sealed bid auctions.

  Buy Now bidding – an instant purchase can be made. This can be connected to a payment system and purchase           made on line immediately

  Winning/Losing indicators – graphical display of the users current position

  ‘My Bids’ - bidders can see instantly their position for all lots they are bidding on.

   Bid increments – the minimum bid that must be placed to increase the bidding

   Set start and end date and time for product

   Track who has placed bids

   Track when bids are made

   When they have been outbid

process of purchasing an item on ebay 

1) You can search for items to buy by typing keywords in the search bar and clicking on Search. If you know what you’re looking for, be specific – for example, ‘size 8 denim jeans'

2) You’ll now be shown a list of items that match your search criteria. Next to the image and name of each item is information telling you if you can ‘Buy It Now’ at the price displayed or if you must bid for it: the number of existing bids and the highest bid are displayed. The final column shows the amount of time left before the auction ends or the product is removed. ’22d 9h 8m’

3) Click on the item’s image or name to get more details and to place a bid or to ‘Buy It Now’. Before bidding, check that the seller is reliable by clicking on their user ID underneath ‘Seller information’. This will show you the comments and ratings of any previous customers.

4) To place a bid, enter the maximum amount you’re prepared to pay in the box provided, and click the blue Place bid button. So if the current bid is £22, but you’d be happy to pay up to £35, type in ‘£35′. The current bid will only go up to £23, assuming that no one else has placed a bid higher than £22. eBay will…