Manage Ebay A to Z

I am converting Over to marketplaces like Ebay, Amazon Fba, Walmart, Etsy, etc. In order to expand my brands reach from scratch through product research, sourcing, and all the way until sales begin to flow in. I basically need a full management team in which can deliver managing my marketplaces with superb service. For now, as II currently have Amazon Fba management, I am now looking for ebay management teams that can assist an A to Z process until sales are achieved. Profit sharing I would consider as well based on team needs and/or negotiations.