How to group buy or sell goods in your country via internet

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As you know,there have ebay in the internet for each country.But I found that ebay need charge many money for user.If I have a good and I want to sell it.ebay also will charge me when I add it to their webpage and will charge me again after selled.And Paypal also will charge me when I want to transfer money from them. As I know China have a webpage,there have no charge for everyone.Seller can sell his goods for end user immediately and have any another cost.Also end user can buy good from seller immediately and have no any other cost. How about your country?Whether have such webpage like ebay but have no any cost for each user?