414223 Auction module for Joomla

We need someone very good with PHP, Joomla how much would it cost to create an auction module for joomla with the following function: This day the auction sites getting more and more popular specially those types where you can buy valueable goods for really cheap price like the following: madbid or poshbid or bid4it The point there is the bidders buying bids fom the owner of the page. Would be important to the prices of the bid have to be variable,adjustabe, and also to being possible making offers like 1bid1pound, 10bid just 8 ect... The way, the number of the bidders goind up that when someone bid on the item the auction time starts again, which also have to be adjustable. We also need a controll function-like a hidden reserve price-to do not let the auction ends under a certain limit or amount,and also an automatic function which produce an automatic bid in case no one bidding for the product until it reaches the reserve or our [login to view URL] only important specially at the begining to make the page popular,not for cheeting pourposes, just to filtering the demand of the different kind of product. So every part have to be adjustable,bidding time, price,reserve,automatic bidder limit,and also able to do promotions like earlier advertized code give 5free bids ect.. Waiting for your ideas,perception to carry out this component, we are open for any offers or ideas about the product or even to set up a similar site, not copying it - wink wink We would like to design and run a similar site like the madbid just to make it even more easyer to handle and more userfriendly and with more function if its possible. Thank you in advance and waiting for your response Best regards