Here is some additional information on duty for items brought into the US. In addition to the $800 exemption per person (from countries other than the Caribbean or US Insular Possessions - different amount applies to them), the next $1000 per person is taxed at a flat rate of 3%. Again, that is PER PERSON, so a family of 4 would have an additional $4000 to be taxed at 4%. That, together with the $3200 would almost cover a Birkin!
You can read more about his at <http://www.eap4you.com/mem/library/default.asp?TopicId=295&CategoryId=0&ArticleId=25>
Thanks India for this information. I didn't know it. This makes it totally a no-brainer for me to declare.