I really need to start one of these companies...What you want i can get. bulk orders preferred. Seems to me all you have to do is take the order at the price you quoted. Approach the supplier for said item/items at a cut down price, then turn item onto buyer....eventually.
My stepson started and ran just such a company. He had worked in buying/supply chains so knew how to approach manufactureres and importers. He made the order system efficient, charged very very little markup. The key to doing it properly (ethically) is to never take the customer's money until goods are despatched and to have very good communication. He spent half a day, every day, doing nothing but answering emails, taking calls, processing returns and checking orders were processed. Paid his own way through uni.
That's a world away (sic) from bronzemoon, who seem to take people's money and not give a fig about customer service.