I am interested in online sales data for authentic shell necklaces
made in Niihau.  The purpose is to gauge the overall level of
web-based sales for this unique art-form.

Please use whatever means you feel best provides an accurate and
thorough record of the online sales of Niihau necklaces.

Below is some information about Niihau shell necklaces from various websites:
?Niihau shells are found in abundance only on Niihau, an Island off
the coast of Kauai which is privately owned and closed to entry.
Niihau shell jewelry is unique and requires considerable skill and
time to make and is made for weddings, funerals, special gifts,
trading for supplies, and for pride in making the best and most
unusual piece ever made.?
Also:  http://www.allenhemphill.com/Niihau%20Island.pdf

Examples of stores offering high-end Niihau Necklaces:
http://www.kauailink.net/~kfa2/cgi-bin/macusishop.cgi
http://www.tropicislemusic.com/jewelry/niihau5.htm

Thank you for your help!