Custom content scraper scripts and associated link checkers

Edit (4th May) : I've got 18 proposals so far and am already talking to a couple of shortlisted candidates. Please don't send me anymore new proposals. Thanks to everyone who's applied so far. I haven't been able to reply to each one of you individually, but will message you if the situation changes, thanks.
_____________________________________________________________________________________________________________________

I run a website in New Zealand that displays the clearance stock of various local stores, scraped directly from their websites.

The stores whose products I display are my clients and range from women's clothing to shoes to electronics and such. All of these stores have a website (some are online only) and I usually display the products from the SALE / Clearance / Outlet section of the site, which are marked down in price. There is no buying or selling in my site, but all products have a 'Buy Now' that redirects my site's traffic to the product's original page in the retailer's site so you can buy the products directly from them.

Some stores only have 30 products while others could have 300 or more. Every time I sign up a store, I get their permission to display their products in my site and will need a custom content scraper script for that store.

For example, if I sign up a women's clothing store and they have a website, I'll need a script that will scrape all the products from one or more sections of their site (like SALE or Outlet or Clearance) and output the results in the form of CSV files. I can then upload the CSV files in the back end of my site so that the scraped products display properly in the front end.

I will need a unique script for each store that I can execute from my computer as many times as I need. I will also need a corresponding link checker for the store. The link checker script (also unique for that store) will check all the products of a store in my site against the original shop's site and notify me which products have expired (no longer listed in the original site) and which products have had their details changed (like price or title).

I am willing to pay $30 for each content scraper script and $20 for the link checker, so USD $50 in total for each shop. I will be averaging 2-3 shops a month give or take and am looking for someone who can work long term with me.

Each time I want a new script done for a new client, I will specify which sections & features I want included and which ones omitted. You must be able to tailor the script accordingly, including things like formatting and links.

You will have good communication skills, be willing & able to follow instructions via email (no Skyping or video/voice chatting), be competent and skilled, produce the scripts in a reasonable time (3-5 days max) and be reliable. You must also be very proficient in content scraping and have a good understanding of WordPress.

You will only need to do 1 script and a link checker for that shop to start with, but will have more to do down the line. I will give you all the specific details, links etc. if I shortlist you. No need to bid for less than what I've proposed, just do a good job for that price and I'll be happy.