What can make market.live the prime place to sell

What can make market.live the prime place to sell and buy? Like Ebay, Amazon and others? I shop on Ebay due to them having everything I am looking for and easy....same with Amazon. I like auctions and easy buy now. In and out no hassle. I don't know besides cost to sell, 1 cart function, chat while live etc., that can be added to create that level of success. I want market.live to be the go to place to shop and sell.