A JB case is shipped from China where it is made to the dealer in the USA. Therefore you are paying for shipping between China and the USA and the cost is buried in the price of the case.
You might consider a case actually made in the USA by craftsmen whose quality is unmatched by Chinese labor. Then you are also only paying for shipping from within the USA for the case. Again, the cost of shipping is contained in the selling price of the item. There is no such thing as free shipping.
For fun, just google "chinese military buildup" and see what the trade deficit with China is buying for the Chinese. This deficit increases with every purchase of goods made in China.