Vehicle Listing Site with Typo3

I'm looking for a quotation on developing an automotive -> vehicle listing website. This vehicle listing website is about to become the number 1 full-service, and one stop automotive online store for buying and selling new, used or pre-owned vehicles and recycled vehicles parts. This site provides assistance when selling or purchasing vehicles, mechanical services, marketing assistance, latest automotive development news and more. The objective is to be the busiest and popular automotive web site in it's region. As well as containing an unrivalled number of vehicles for sale, the site also provides: Buyers guides, insurance and finance centres, motoring news, road tests and more. At any one time, the site will contain more than 100,000 vehicles for sale. I'm looking for a quotation on developing this website (back and front end). More detailed information is available upon request. Kindly email me a.s.a.p. your answers on: - your experience in using Open Sources applications; my technology preference are Typo3, CMS, Msql, php, - Ajax, SugarCRM, a GDS and OpenMap (something similar to googlemap). - how many resources are needed to work on this project - needed time frame for development - development cost I'm open to joint partnership and possibilities on longterm relationship for website maintainance. Thank you for your time and effort.