What is retail shipping price?

Retail shipping price is how much you charge your customer for shipping. On the other hand, the Grandville Printing shipping price is what we charge you for shipping when we send out your order.

This means that the amount you pay is:

Grandville Printing product price + Grandville Printing shipping price

And the price your customer pays is:

Your product retail price + Retail shipping price

You get to choose the retail price and the retail shipping price. For example, you can make it equal to the Grandville Printing shipping price so that your customer is covering the cost, or you can set it to $0 to offer free shipping.