What are the characteristics of non-supply e-commerce?

Unsourced e-commerce means that you don't need to stock up your own goods, but collect high-quality goods online and sell them at a higher price. Delivery and stocking are done by suppliers. Non-supply merchants only work as middlemen to earn the price difference. This model has the following characteristics:

-There is no need to store goods, which saves the cost of goods storage.

-The investment cost is relatively low. Whether a product or a shop can be made can be tested for several hundred dollars.

-Save the relatively high express fee in the early stage.

-Save storage costs.