You control the retail price you would like to sell at on your store, however we have suggested prices by default that you can edit.
To Calculate Profit Margin:
Take (Base Price + Shipping price ) - (suggested retail price + shipping price ) = Profit
To simplify (Base Price - Retail price) = Profit Margin , if you keep the shipping rates the same on your store.
*Premium accounts earn more profit per order, with lower base prices, you can read more about premium accounts here