Carleton:
The number one source for stereoscopic glasses, cameras, and
other 3-D items is:
Reel 3-D Enterprises, Inc.
P.O. Box 2368
Culver City, CA 90231
(310) 837-2368
http://www.3d-web.com/reel/reel3d.html
They have a great catalog.
I believe the red/green (red/blue is more common) glasses are about 40 cents.
Hal Layer
San Francisco State University
hlayer@sfsu.edu
http://userwww.sfsu.edu/~hlayer