Custom Penny Auction Script

I have a penny auction and I need 5 task done 1st task is a buy Now feature for the website 2nd task is a report feature. I need a feature that will generate financial reports , and other reports. 3rd task is I need a feature that will limit how many auction a user can win. 4th task I need you to PM me and I will tell you 5th task I need the payment gateway to be fix. The Programmer who hire will not only do this project but will also be my maintenance programmer. I will need you to also give the price that you will charge for monthly maintenance of the site. Monthly Maintenance will include keeping that the website is running smooth and fixing any bugs that come in the way.