Actually it is illegal. Ive heard of several cases where individuals were sued by various companies for the selling of counterfeit goods such as handbags etc.
1) conspiring to traffic in counterfeit goods, in violation of Title 18, United States Code, Section 371;
(2) trafficking in counterfeit goods, in violation of Title 18, United States Code, Section 2320(a); and
(3) concealing and selling imported counterfeit goods, in violation of Title 18, United States Code, Section 545.
ALSO..
http://www.justice.gov/criminal/cybercrime/shaoIndict.htm