Hi,
I do have experience of all the US marketplaces which includes Sears, Newegg, Rakuten, Amazon, Ebay, bestbuy, Jet, Walmart.
I do always work there for uploading products, I do always prefer to upload products through feed files, will get this job done with best quality for you.
Please check my freelancer reviews, I do always upload products on all these marketplaces for customers through feed file.
Ready to start work on this project immediately.
Thanks