You get comission according to your membership rank. Please look at this.

If you are Anekoji membership and sold 100$ products at 120$,
you get 100$*5% = 5$. and your added price.

So, at this time, you get previous 5$ + 20$= 25$.

You get comission according to your membership rank. Please look at this.

If you are Anekoji membership and sold $100 products at 120$ on your website,
you order the product at $100 on KYOTO-SHIPPING and get 100$*5% = 5$ and previous 20$.

You get in total, 25$.