Amazon/Ebay store expert / web scraping expert/ dropshipping software expert to upload products from suppliers to my amazon and ebay store automatically

Hi we want to establish relationship with an honest freelancer and manage our amazon and ebay store on daily basis. Need to know how Amazon US Pro Seller accounts work and Ebay account and how to upload csv files to an account and import products from various suppliers such as Aliexpress to my amazon and ebay store automatically with Dropshipping scraping software which will provide you the name later. I need someone to upload various files cvs, xml, datafeeds(and maybe more later). There are thousands of items of various general products on the csv, xml, datafeeds files. I need to convert the prices (to make it easy, we'll just say 50% higher). All are done through dropshipping scraping software automatically. If we like your work then we work with your for a long time cooperation based on your honesty and hard work.