Car Auction website similar to eBay Motors

I need someone to build a website for car auction, car sale, similar to eBay Motors, where I would place the car for sale and the buyer would buy it. The website must be build from the scratch, the website must have a very well constucted database, which could feet no more than 1000 cars, 100 login per day, and so on. The Website except car sale (which will be i 2 ways, Auction, buy now), The back end of the website must be very easy to manipulate Website features: 1. Very good database. [login to view URL] Registrations (buyers) [login to view URL] Payments are not necessary because it's an auction between 50 in-house dealerships and a check provided within 3 days [login to view URL] A lot more... Please see ebay motors for an example [login to view URL] In my website i want log & password to automatilly pop-up. I would be the admin and be able to add vehicles. an APPROVED USER can log on and see the vehicles for sale I need only serious people, who can make the website from the start to finish without requiring more funds or more designers or specialist. Only Serious BIDS, Only professional must bid.