FBA fees when sourcing products from India


I need to understand FBA costs before I register as seller.

I want to source a book from India for sale in Amazon US using the FBA route. So the book will be picked up from India by Amazon during the fulfillment process for a customer in the US.

I used the FBA calculator, and it gave FBA fees as $6.02, of which fulfillment fee is $5.85. I understand that fulfillment fees includes the shipping cost.

Now, considering that the book weighs about 4 pounds, and will be picked up from India, can I assume this as a true estimate? I know that if I courier a 4 pound book from India to US, the costs are much higher, around $50 in fact. Hence the question.