document updated 18 years ago, on Apr 5, 2006
http://www.imagesco.com/catalog/pic/picexper.html
$90. 16x2 LCD, 5v PS, no serial
Mark III controller board
$30. 5v PS, serial interface, 2 LED's. Only $90 for the whole robot kit :).
SimmSticks
$50. 5v PS, serial interface + programmer, several LED's + switches. Also very expandable.
Glipic