Build me a website data scraping tool

I need to be able to scrape data for specific products on HomeDepot.com, Amazon.com, Wayfair.com, Target.com & Overstock.com. I have a website with hosting that I can give you access to use. I need to be able to pull a list of skus on a csv file from an FTP folder and have it check once a day. Based on that list I need it to run a report and scrape all pricing for the products/skus for the 5 retailers/websites and send it back to me in the same FTP folder. I'm open to other ideas but basically i need to find out what products are live on each website and what the pricing is for that day based on a list of products we have in our database. I would like a log as well so I was thinking the FTP cvs files would be easy way to do that.

I need you to be able to enter a sku or batch of skus to scrape the pricing (and maybe more) to then submit back to me as an FTP file and let me set it to run on an automated daily schedule.