e-trade website by php

hi for all . want make website for e-trade like this site : [login to view URL] contain these scripts : 1) script for login to website in 3 types : a) for dealer to put in the site his products b) for customer to buy from the site , when customer see the product , the site receive email from him told us I need this product c) for dealer and customer . the dealer put there product from his personalize page which programmer made it for him and for customer personalize page , counter the admin put how many he/she bought from the site 2) database base for categories of products , and sub categories shown in the main page and when click in it or in sub categoreis shown all products which the dealer choosen On main page show the categories , and sub categories , when click on it shown all product 3) every product contain some information view in page alone and contain picture which uploaded from the dealer 4) search engine for the products Please put your price in every script , need professional programmer only . Thanks alot