Clone of ebay affilaite website

I want a site similar to [login to view URL] It will show all auctions ending within 1 hour with a price of less then $1. I also want the user to be able to adjust this price to anything (such as $5 etc) It should have a place for me to enter my affilaite ID for ebay. The ebay affilaite ID will then also add the item URL onto the end of it to complete the link to the ebay website. All items should be fetched automatically and use teqniques such as caching to avoid high bandwidth/disk space. I also want to have a section where I can input cetain item numbers and have them displayed on the main page at the top or maybe even every page. These will be featured items where I can sell ad space to people who want their ebay item listed. Everything should have an admin backend that will allow me to change everything such as how long a featured auction will be listed for, etc.