The listing price is the amount you have to pay the supplier for the product, while the retail price is just a suggested price at which you can sell the product. However, you are free to make your own retail price by editing it in the Import List.
More on that here: Customize your products
Note that neither the listing price nor the retail price include the shipping. This is because we have estimated the retail price based on the suppliers' experiences with the products, and our suppliers have a separate shipping price! Along with that, the shipping price is separately written so that you can make the decision of which countries you wish to target and which shipping cost you wish to go along with!
We would strongly recommend you to take the shipping cost into account before setting up your prices.