Dropshipping Site Scraper + Amazon, Ebay and Spotify Bulk Product Uploader and Manager

Hi I need a script that will scrape thousands of products from 3 of my drop shipping supplier websites based on a set of filtered criteria that I input. the products will be then input into a csv file with a specific format. The script will then rise the prices by a specified percentage and upload the the products into Amazon, ebay and shopify. It will also place orders to my suppliers when a product is sold on any of my listings. Filter Criteria may be: -Keywords -Categories -Top products in a category -Top products under specific keywords -Price range The above search criteria must be able to work together. For example, I want the script to extract products under the keyword "Green T-shirts" that are priced between $5 - $10 I can add or omit any of the criteria as I want. If I specify a 20% markup, then a product that is currently $12.80. should be uploaded to the marketplaces at $15.36 (20% markup). I also need to manage my pricing and inventories for all the items the script uploads. If the price or stock of a product goes up or down on my supplier site then the price and stock in my Amazon and ebay Store Listing for that product should automatically go up or down too keeping an specified markup. The script should be written using commented python code. And have a web based interface. I will provide login details to my dropshipping suppliers to be scraped. Should you have any enquires please do not hesitate to contact me.