Does this type of Amazon fulfill company exists?

Hi everyone,

I’m very new to Amazon FBA, and one thing that I don’t like about it is I have to ship my products to Amazon warehouse, and this costs money. Do you know any Amazon fulfill company that allows me to buy products XYZ online (marketplaces), then ship directly to their warehouse (without those labelling requirement like Amazon or ShipBbob)?

Because right now, ZYZ marketplace is sending me the products, then I have to ship again. It’s both time consuming and cost increasing…

Would really appreciate your help and insights.

Thank you.