Import taxes fees?

I'm currently experimenting on a order fulfillment business. I am living in Philippines and want to sell in United States. So I want to ship some of my products to a US fulfillment warehouse. And they will fulfill my orders for me.



But I don't know the import taxes that I need to pay. I asked a customs brokerage and they told me that I need to pay this:



A) Customs Brokerage Fee: USD125.00 per entry (out port clearance)

B) Single Entry Bond Fee: ?

C) Documentation Fee: USD40.00 per shipment

D) Import Duties: At Cost (based on U.S. Customs Tariff Schedule)

E) U.S. Import Tax - Merchandise Processing Fee: USD25.00 (estimated)

F) Courier Fee: USD25.00 per run

G) FDA Fee (if applicable): USD25.00

H) FDA Prior Notice Filing Fee (if applicable): USD50.00 per filing



Are those really required to import a product in United States? If you are the one who's importing a product, which of the letters above you should pay to successfully import a product? Because I'm planning to ask my friend whose currently living in United States to clear the taxes for me. So I want to know which are required and which are the fees to the customs brokerage.



And if you know a cheaper customs brokerage, please tell me!