In case others were as confused as i was about this
"While they’re often confused, Sold by Amazon and Fulfilled by Amazon are two different things.
With SBA, Amazon prices your products and owns any transactions that take place. When an item sells, they pass the proceeds on to you for allowing them to sell your product.
With FBA, you price your products and own the transactions. It is a service where Amazon handles the order fulfillment process for your products."
"While they’re often confused, Sold by Amazon and Fulfilled by Amazon are two different things.
https://amzscout.net/blog/sold-by-amazon/