I am the Business Development Associate in Craft/Giftware for UK Trade & Investment at the British-Consulate in NYC. We handle more of the market research side of things, but I can definitely direct you to the right resources!
I believe that the tariff on this type of product is 0% but you should consult the official resources below to be sure about that:
1. Classification Code
The product/goods will require a customs Classification Code before you can identify the duty or import rates applicable. Call the Customs CLASSIFICATION HOTLINE - Tel: 01702 366 077 TARIFF (UK), Mon-Fri 8.30-5.00.
2. Duty Rates
The United States International Trade Commission website http://dataweb.usitc.gov/ provides international trade statistics and US Tariff data to the public full-time and free of charge. Directions for easy access:
1. Select TARIFF DATABASE (on left side of page)
2. Click – Yes, go to USITC Year 2013 Tariff Database (Needs to be updated for 2014) http://dataweb.usitc.gov/scripts/tariff_current.asp
3. Enter Classification number in the box (only type the first 6 digits) and click ‘List Items’
4. Click on relevant ‘detail’
5. The rate is quoted under MFN (Most Favoured Nation)
Contact Information for US Customs
Office of Customs & Border Protection
1300 Pennsylvania Avenue, NW
Washington DC 20229
Customer Service Centre: (001) 703 526 4200
Or, speak with a Customs Agent at the port of entry where your goods will enter, which you can find on the CBP website. http://www.cbp.gov/xp/cgov/toolbox/contacts/ports/ Click the state, then the port, then call the general phone number and ask to speak with the customs agent in the sector that your goods fall within.
Or, you can hire a Customs Broker. Approved brokers by state can be found through that Port of Entry link above. Click the state, then the port, then click the ‘View List’ link for Brokers.