How to build a trustful marketplace?

1) First item sold? Seller receive money after buyer received item and he is satisfied (positive feedback)

2) After 100 feedbacks positive seller will receive money immediately

3) Seller start receive negative feedbacks? He will back to the point 1.

4) Just national people and entrepreneurs can sell in our marketplace. Indonesia = Indonesian sellers. European Union= European sellers

5) Platform will reject bad sellers from other countries. Dropshipping prohibited. Anyway abroad entrepreneurs and people can sell but must show that they have logistic/warehouse in the country choose for selling.