Clone this site - auction software extension

Looking for developers who may extend one of existing, flexible auctioning scripts. I'd like _you_ to select auctioning script, leverage whatever is existing already and add functionality of [login to view URL] to the selected script. I'd like to be final decision maker on a script selection ! Instead of normal, built-in auction process I'd like you to upgrade the system to make "group bidding by interests". Like prosper does. I am not interested in much of back-office functionality at this stage. Money collection, reporting and many other functions needs to be postponed, left for the future. Just front office now. Nice looking, bidding. Up to the auction end. At least user registration, bidding and agreement between parties. I've been looking at phpprobid and [login to view URL] as good candidates for a change. Further details/ discussions avialable via e-mail. Our work has a potential for future. I'll be looking for more permanent cooperation as well.