I developed this auction website as part of my database applications module. It had to include facilities for users to register as either a buyer or seller. Buyers can make bids of the different items for sale. Sellers can upload their own items, set a minimum price and sell-by deadline. They should also be able which items have bids allocated to them. 

The website contains an SQL database which stores information about the different users and items. I also used ASP.NET and C# to implement some features. 

The website isn't hosted live, but a demo can be found here: