Importing is really quite complicated and time consuming if you have not done it before. I would strongly advise you to utilize a shipper not only transport the goods but act as a customs broker. You can then call their international shipping division or follow the instructions on there website and they handle the rest. The person shipping it to you might be able to advise you whom has good rates shipping from their country. You can also use Fedex, DHL and UPS. Be very sure to check around and ask if all cost are included in the quotation as the rates can vary significantly from one to the other.
You can expect to get a bill that would be made up of the following charges. they might not be outlined but they will be there somewhere:
1) Transportation Shipping charge
2) Possible over charges for cubic weight.
3) Customs Import Duties.
4) Insurance
5) Brokerage Fee.
The main thing you need to do is to determine what the US Harmonized Code is for the item you are importing. This is what determines if how much duty you will have to pay. Here is a link to the USA Harmonized Tarrif schedule.
By Chapter of HTS :2008-04-01 - Revision 1, Official Harmonized Tariff Schedule of the United States Annotated
Its in your best interest to find the code that fits but provides the lowest duty rate. I do not know if eCCR are directly named and frankly don't want to go thru the time to figure it out. You will know what I mean when you start looking at the US documents.
Here is another thread that gives some input on the tariff code you might want to consider.
http://www.rebreatherworld.com/inspi...stom-cost.html
Good Luck
John