I'm a professional amazon,ebay,sears, seo freelancer and working to increase amazon product/ebook ranking. I also work to upload listing in amazon seller central account. I can upload listing with amazon feed/excel upload. I have created more than 1000 listings and it's still going on. Also using Amazon feed/flat file I've solved so many complex listings problem. So far worked more than upwork hours and still counting. I can increase your amazon kindle ebook/ product visibility by doing SEO in your book/product both in US and UK site. I also work to increase the product ranking and seller ranking both in amazon US and UK site. I have worked on many amazon products including ebook/kindle in amazon for increasing rank. So here is the summary what I do ? Amazon SEO ? Amazon ranking ? Amazon Ebook ranking ? Amazon Kindle ranking ? Amazon variation add ? Amazon complex flat file fixing ? Amazon category approval / ungating ? Amazon listing upload ? Amazon feed upload ? Amazon excel upload ? Amazon Brand Registry ? Amazon inventory upload ? Amazon listing modification. Thanks.