thats not a webpage, but a web application. web page = html, web application = asp, c, cfm, etc that can hook up to a database.
so u need someone who can do web application development/programming, database development/programming
the cost includes getting the server, hosting it (co-lo or shared), bandwidth, programming cost, software license if you are hosting it on your own like lelong.com.my , it may cost you rm50k and above to setup & run for one year. a note, the server license (ex: microsoft server 2013 & ms sql database 2013) would cost 30k or more. shared is cheaper but you have no control of the language nor security.
a note, carlist is hosted in singapore, under amazon web services. i am using a comparable system virtual box, that would set you back rm15k for a year not including any licensing fees.
if you need any further professional advise, you can look for me. however my chargeable rates is rm 300 per hour. note: if you cant afford rm300-600 you shouldnt think about setting up a business.
sample of my work:
http://www.gamestotal.com