There are paid and free sales agents.

I am also doing online store sales agent now, which is free. I find the source of goods on Alibaba and support drop shipping. It is very convenient and suitable for one person or family business.

If you want to do paid sales agent, it should be some relatively large-scale companies with a certain reputation, and the company will provide certain training, but there is no standard for this fee. It depends on the specific company, ranging from a few thousand to tens of thousands.

I think if you are just starting out, you can find some free ones to try first, try and make mistakes with a small cost, and then do large-scale ones after you have more experience. At this time, it will be smoother.