Data Mining & Curl PHP

I have a bit of PHP experience my self, but my coding is too sloppy and some areas i struggle, so rather than waisting time my self i am looking for someone who is confident in the following areas for a project. PHP MYSQL DATA MINING / WEB SCRAPING CURL AJAX PROXYS I am looking for someone who can database a website, the website has a dozen categories and in each categories, there can be anywhere from 100 to 1000 products which i want collecting and then storing in to a database. The data ranges from the following : SKU ( Barcode ), Title, Price, Stock I want 2 scripts making, 1. which will scan the website page by page, storing the products if not already in the database. This will be run once every week. 2. another which will use the products in my database to update the prices and stock. The idea is, a barcode in my database is selected and used to lookup the product information on the website, to then collect the up to date price and stock levels, i time stamp will be saved when this information was collected for my database to know which need updating and where already have. Due to the number of products which need updating, i need a script which can run and not time out, so maybe this is where ajax come in. I have managed to do the above my self, but my coding is sloppy, so the process runs slow and times out quite abit.