It's pretty simple concept and no need to make a complex software.
Unique Template design
Limited Auction with Buy it Now Concept : users will buy an authorized seat to bid and get 100 bids and will bid on. The users who will loose the bid, wil have a buy it now option.
All the possible functions including user tracking / IP Tracking
Payment Gateway: Paypal / Moneybookers
Reporting of finance / user / bids etc.
Bid and Discuss with me the remaining details.