One Click Commerce

Hi All, I am looking for quotes for an upcoming project. I would like to have a one button sub domain ecommerce website creator similar to [login to view URL] or [login to view URL] potential clients will go to my website and decide between four options a normal information page a gold information page or a normal ecommerce store or a gold ecommerce store they will sign up and the back end will automatically create a fully functioning ecommerce website (preferably similar to magento) this will be sub domain based users may choose 3, 6, or 12 month contract options A full CMS back end will be avaliable to them, this must be very easy for them to change pictures and add content it will require at least 20 themes for information and 20 themes ecommerce to start with the most impotant aspect will be that this website will run by itself. So full automation is required. If you can have a good read through this add and those other websites and then pm me any ideas and prices you have including the amount of experience you have.