Hi there I developing right now an Amazon scraper that does a lot of thing in relation from what you want, for example, it finds all the item from a keyword search, analyses sales rank, number of sellers, fulfilled plans, etc., makes fba calculation to see your profit. etc. .You can see that the project was assigned to me. Because I’m already thinking about the project, I have and insight valuable for you. I can show you screnshots of the project that i'm working on as also other projects where i did web scraping. It is a really nice project with a lot of potential for you.